NOTE to Susie: get corrected version of PDF to students
NOTE: page numbers refer to the course PDF Move Composer in front of web services section + make it not optional Suggest to Cal this class to to 2.5 hours
// to get PHP hints from Zend Studio: // place the following XML into a file ".buildpath" // at the root of sandbox and orderapp project folders
<?xml version="1.0" encoding="UTF-8"?>
<buildpath>
<buildpathentry kind="con" path="org.eclipse.php.core.LANGUAGE"/>
<buildpathentry kind="src" path=""/>
<buildpathentry kind="con" path="org.zend.php.framework.CONTAINER"/>
<buildpathentry kind="con" path="com.zend.php.phpunit.CONTAINER"/>
</buildpath>
INSTALL PHP SOAP IN VM:
sudo apt-get update
sudo apt-get install php-soap
sudo service apache2 restart
// PHP for Exp Programmers
// Homework for Wed 12 Apr 2017
// Robert M2Ex6: Exercise Create a multi-dimensional array to hold the cards and numbers indicated below. Be as code efficient as you can. Use colors as the primary array key Output one color and card number
(red, blue, green, yellow) (1, 2, 3, 4)
// Sumitha M2Ex3: Exercise Declare an array that contains the following sentence with one word in each array element: Programming in PHP is fun! Then, output the third element.
// Leslie
$days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
'Friday', 'Saturday', 'Sunday'];
$months = [ 'January' => $days,
'February' => $days,
'March' => $days,
'April' => $days,
'May' => $days,
'June' => $days,
'July' => $days,
'August' => $days,
'September' => $days,
'October' => $days,
'November' => $days,
'December' => $days
];
<?php
$status = $_GET['status'] ?? $_POST['status'] ?? 'DEFAULT';
$status = strip_tags($status);
echo '<pre>';
echo 'Your Status is: ' . htmlspecialchars($status);
echo '</pre>';
// Robert M3Ex1: Exercise What is the output from each if/else construct?
$valueA = "50";
$valueB = 50;
if ( $valueA == $valueB ) {
echo "Equal <br>";
} else {
echo "Not equal <br>";
}
if ( $valueA === $valueB ) {
echo "Identical <br>";
} else {
echo "Not identical <br>";
}
// Sumitha M3Ex2: Exercise Assume that people work in an office from Monday through Friday, and are off work on Saturday and Sunday.
Add an elseif clause to handle the response if the day is either Saturday or Sunday
Now try the same thing using switch
$dayOfWeek = "Monday";
if ( $dayOfWeek === "Friday" ) {
echo "See you on Monday";
} else {
echo "See you tomorrow";
}
// Leslie M3Ex3: Exercise What is the output?
$i = 6;
while ( $i > 0 ) {
if ( $i === 4 ) break;
echo "You only have $i chance(s) to get this right!<br>";
$i--;
}
}
// Robert M3Ex4: Looping Write code to count from 1 to 10 using each type of loop:
for while do-while
// Sumitha M3Ex5: for Loop What does this code do?
$max = 100;
echo '1, 2, 3, ';
for ($x = 5; $x < $max; $x++)
{
// checks to see if number is odd or even
if($x & 1) {
$test = TRUE;
for($i = 3; $i < $x; $i++) {
if(($x % $i) === 0) {
$test = FALSE;
break;
}
}
if ($test) echo $x . ', ';
}
}
// from Wed 12 Apr 2017
// PHP for Exp Programmers
// Homework for Wed 12 Apr 2017
// Leslie
<!DOCTYPE html>
<html>
<body>
<?php
$days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday','Friday', 'Saturday', 'Sunday'];
$months = [ 'January' => $days,
'February' => $days,
'March' => $days,
'April' => $days,
'May' => $days,
'June' => $days,
'July' => $days,
'August' => $days,
'September' => $days,
'October' => $days,
'November' => $days,
'December' => $days
];
echo 'Tuesday in October: ' . $months['October'][1];
?>
</body>
</html>
Output: Tuesday in October:Tuesday
// Robert M2Ex6: Exercise Create a multi-dimensional array to hold the cards and numbers indicated below. Be as code efficient as you can. Use colors as the primary array key Output one color and card number
(red, blue, green, yellow) (1, 2, 3, 4) //----------------------- Solution ------------------------------ // This may not be the most the most efficient but it is readable.
<?php
//A two dimentional array "$Cards"
$numbers = [1,2,3,4];
$cards = [
'red' => $numbers,
'blue' => $numbers,
'green' => $numbers,
'yellow' => $numbers,
'purple' => $numbers
];
echo 'The color is ' . array_keys($cards)[0] . ' and the number is ' . $cards['red'][3] . '.';
?>
// Sumitha M2Ex3: Exercise Declare an array that contains the following sentence with one word in each array element: Programming in PHP is fun! Then, output the third element.
<?php
ini_set('display_errors', 1);
echo '<pre>';
$sentence = ['Programming', 'in', 'PHP', 'is', 'fun!'];
var_dump($sentence);
echo PHP_EOL;
echo 'The third element of the sentence array is: ' . $sentence[2];
echo'</pre>';
// another solution:
<?php
$text = 'Programming in PHP is fun!';
var_dump(explode(' ', $text));
// Leslie
$days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday',
'Friday', 'Saturday', 'Sunday'];
$months = [ 'January' => $days,
'February' => $days,
'March' => $days,
'April' => $days,
'May' => $days,
'June' => $days,
'July' => $days,
'August' => $days,
'September' => $days,
'October' => $days,
'November' => $days,
'December' => $days
];
<?php
$status = $_GET['status'] ?? $_POST['status'] ?? 'DEFAULT';
$status = strip_tags($status);
echo '<pre>';
echo 'Your Status is: ' . htmlspecialchars($status);
echo '</pre>';
// Robert M3Ex1: Exercise What is the output from each if/else construct? Answer: Equal followed by Not Identical
$valueA = "50";
$valueB = 50;
if ( $valueA == $valueB ) {
echo "Equal <br>"; //Equal
} else {
echo "Not equal <br>";
}
if ( $valueA === $valueB ) {
echo "Identical <br>";
} else {
echo "Not identical <br>"; // but not identical
}
// Sumitha M3Ex2: Exercise Assume that people work in an office from Monday through Friday, and are off work on Saturday and Sunday.
Add an elseif clause to handle the response if the day is either Saturday or Sunday
Now try the same thing using switch
$dayOfWeek = "Monday";
if ( $dayOfWeek === "Friday" ) {
echo "See you on Monday";
} else {
echo "See you tomorrow";
}
<?php
ini_set('display_errors', 1);
echo '<pre>';
$dayOfWeek = "Monday";
if ($dayOfWeek === "Friday") {
echo 'See you on Monday';
}
elseif ($dayOfWeek == "Saturday" || $dayOfWeek == "Sunday") {
echo 'You should be at home today';
}
else {
echo 'See you tomorrow';
}
echo PHP_EOL;
switch ($dayOfWeek) {
case "Friday":
echo 'See you on Monday';
break;
case "Saturday":
case "Sunday":
echo 'You should be at home today';
break;
default:
echo 'See you tomorrow';
break;
}
echo'</pre>';
// Leslie M3Ex3: Exercise What is the output?
$i = 6;
while ( $i > 0 ) {
if ( $i === 4 ) break;
echo "You only have $i chance(s) to get this right!<br>";
$i--;
}
}
Output: You only have 6 chance(s) to get this right! You only have 5 chance(s) to get this right!
// Robert M3Ex4: Looping Write code to count from 1 to 10 using each type of loop:
for while do-while //----------------------- Solution -----------------------------
<?php
echo 'For Loop<br>' ;
for ($w = 1; $w <= 10; $w++) {
echo "number: $w <br>";
}
echo '<br>';
$x = 1;
echo 'While Loop<br>' ;
while($x <= 10) {
echo 'mumber: ' . $x . ' <br>';
$x++;
}
echo '<br>';
$y = 1;
echo 'Do While Loop<br>' ;
do {
echo 'number: ' . $y . ' <br>';
$y++;
} while ($y <= 10);
?>
// Sumitha M3Ex5: for Loop What does this code do?
$max = 100;
echo '1, 2, 3, ';
for ($x = 5; $x < $max; $x++)
{
// checks to see if number is odd or even
if($x & 1) {
$test = TRUE;
for($i = 3; $i < $x; $i++) {
if(($x % $i) === 0) {
$test = FALSE;
break;
}
}
if ($test) echo $x . ', ';
}
}
Returns the prime numbers under 100. Uses bit-wise comparison in the outer for loop. Inner for loop checks for a possible division by another lower number without a remainder. 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97,
Wed 12 Apr 2017: http://collabedit.com/e2vnd
// examples
<?php
function getHourMinSec()
{
return new class() {
public $hours;
public $minutes;
public $seconds;
public function __construct()
{
$this->hours = date('H');
$this->minutes = date('i');
$this->seconds = date('s');
}
};
}
var_dump(getHourMinSec());
// example of callable + implementation of pub/sub design pattern
<?php
class EventSystem
{
protected $events;
function init($key, callable $c)
{
$this->events[$key] = $c;
}
function process($key, $a, $b)
{
return $this->events[$key]($a, $b);
}
}
class AddSomething
{
function __invoke($a, $b)
{
return $a + $b;
}
}
$system = new EventSystem();
$system->init('add', new AddSomething());
$system->init('sub', function ($a, $b) { return $a - $b; });
$system->init('mul', function ($a, $b) { return $a * $b; });
$system->init('div', function ($a, $b) { return $a / $b; });
// some other code not shown
// trigger an event:
var_dump($system->process('add', 2, 3));
// bob M4Ex1: Function Calling Create a script that defines a function named getOrderTotal ($num1, $num2), which takes two arguments and returns the sum.
Call the function and output the result. //---------------------solution--------------
<?php
function getOrderTotal($num1, $num2) {
return $num1 + $num2;
}
$eggs = 3.84;
$rabbit = 11.8;
echo getOrderTotal($eggs, $rabbit);
?>
// sumitha M4Ex2: Recursive Function Exercise The Fibonacci sequence is a series of numbers in which each number is the sum of the previous two numbers, starting with 0.
0, 1, 1, 2, 3, 5, 8, 13, 21, 34
Write a function that returns the nth number in a Fibbonacci sequence.
<?php
ini_set('display_errors', 1);
echo '<pre>';
function fib($num) {
if ($num == 0 || $num == 1) {
return $num;
}
return (fib($num-1) + fib($num-2));
}
$testNum = 11;
echo "$testNum th number in the Fibonacci series is " . fib($testNum);
echo'</pre>';
// bob M4Ex3: Exercise Build a function which takes an array and builds an HTML select/option list
htmlSelectHtml($config), returns a string contains an HTML element with the status options // Starting Code $items = ['en' => 'English', 'fr' => 'francais', 'de' => 'Deutsch', 'es' => 'Espanol']; function htmlSelectHtml($items) { $html = '<select>'; // loop through key / value pairs to create <option> tags ... $html .= '</select>'; return $html; } //------------------------------ solution <?php $items = ['en' => 'English', 'fr' => 'francais', 'de' => 'Deutsch', 'es' => 'Espanol']; function htmlSelectHtml($items) { //$html = '<select>'; // now it works: $html = '<select name="lang">'; //// loop through key / value pairs to create <option> tags foreach ($items as $key => $index){ $html .= '<option value=' . $key . '>' . $items[$key] . '</option>'; } $html .= '</select>'; return $html; } echo htmlSelectHtml($items); ?> Fri 14 Apr 2017: http://collabedit.com/pfk7d // weekend mystery: why does this not work??? // ANSWER: there is no "name" attribute in the element!!!
<?php
$items = ['en' => 'English', 'fr' => 'francais',
'de' => 'Deutsch', 'es' => 'Espanol'];
function htmlSelectHtml($items)
{
//$html = '<select>';
// now it works:
$html = '<select name="lang">';
//// loop through key / value pairs to create <option> tags
foreach ($items as $key => $index){
$html .= '<option value="' . $key . '">' . $items[$key] . '</option>';
}
$html .= '</select>';
return $html;
}
?>
<html>
<head>
</head>
<body>
<form method="post">
<?php echo htmlSelectHtml($items); ?>
<input type="submit" />
</form>
<?php var_dump($_POST); ?>
<?php phpinfo(INFO_VARIABLES); ?>
</body>
</html>
// class examples
<?php
class OrderModel
{
public function show()
{
return var_dump($this);
}
}
echo '<pre>';
try {
// Get the connection instance
$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant', $options);
// Set error mode attribute
// $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Statements ...
$stmt = $pdo->query('select * from orders');
$stmt->setFetchMode(PDO::FETCH_CLASS,'OrderModel');
while ($row = $stmt->fetch()) {
echo $row->show();
}
} catch (PDOException $e ){
// Handle exception...
}
echo '</pre>';
<?php
echo '<pre>';
try {
// Get the connection instance
$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant', $options);
// Set error mode attribute
// $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Statements ...
$sql = "insert into customers (firstname, lastname) "
. "values ('Barney','Rubble')";
$pdo->query($sql);
echo 'Latest ID: ' . $pdo->lastInsertId();
echo PHP_EOL;
$stmt = $pdo->query('select * from customers');
$stmt->setFetchMode(PDO::FETCH_CLASS,'ArrayObject');
while ($row = $stmt->fetch()) {
var_dump($row);
echo PHP_EOL;
}
} catch (PDOException $e ){
// Handle exception...
}
echo '</pre>';
// bob M9Ex1: SQL Statements Identify the result of each of the following SQL statements:
SELECT * FROM users;
SELECT firstname, lastname FROM users AS u WHERE u.id = 25;
INSERT INTO users (firstname, lastname) VALUES(James, Bond);
UPDATE users SET firstname=Rube, lastname=Goldberg WHERE users.id=420;
DELETE FROM users WHERE firstname=Rube;
SELECT * FROM users ORDER BY lastname DESC;
// sumitha M9Ex2: Prepared Statements Create a prepared statement script.
Add a try/catch construct.
Add a new customer record binding the customer parameters.
// bob M9Ex3: Stored Procedures Create a stored procedure script.
Add the SQL to the database.
Call the stored procedure with parameters.
// sumitha M9Ex4: Transactions Create a transaction script.
Execute two SQL statements.
Handle any exceptions.
Create a failed and a successful transaction
Fri 14 Apr 2017: http://collabedit.com/pfk7d
// to get PHP hints from Zend Studio: // place the following XML into a file ".buildpath" // at the root of sandbox and orderapp project folders
<?xml version="1.0" encoding="UTF-8"?>
<buildpath>
<buildpathentry kind="con" path="org.eclipse.php.core.LANGUAGE"/>
<buildpathentry kind="src" path=""/>
<buildpathentry kind="con" path="org.zend.php.framework.CONTAINER"/>
<buildpathentry kind="con" path="com.zend.php.phpunit.CONTAINER"/>
</buildpath>
- Open a terminal window (CTL+ALT+T)
- cd /home/vagrant/Zend/workspaces/DefaultWorkspace/oop | procedural/sandbox | orderapp
- gedit .buildpath
- paste in the XML above
- save
- in Zend Studio, select project and File -- Refresh
// class examples
<?php
class OrderModel
{
public function show()
{
return var_dump($this);
}
}
echo '<pre>';
try {
// Get the connection instance
$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant', $options);
// Set error mode attribute
// $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Statements ...
$stmt = $pdo->query('select * from orders');
$stmt->setFetchMode(PDO::FETCH_CLASS,'OrderModel');
while ($row = $stmt->fetch()) {
echo $row->show();
}
} catch (PDOException $e ){
// Handle exception...
}
echo '</pre>';
<?php
echo '<pre>';
try {
// Get the connection instance
$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant', $options);
// Set error mode attribute
// $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// Statements ...
$sql = "insert into customers (firstname, lastname) "
. "values ('Barney','Rubble')";
$pdo->query($sql);
echo 'Latest ID: ' . $pdo->lastInsertId();
echo PHP_EOL;
$stmt = $pdo->query('select * from customers');
$stmt->setFetchMode(PDO::FETCH_CLASS,'ArrayObject');
while ($row = $stmt->fetch()) {
var_dump($row);
echo PHP_EOL;
}
} catch (PDOException $e ){
// Handle exception...
}
echo '</pre>';
// bob ---------------------------------------------- M9Ex1: SQL Statements Identify the result of each of the following SQL statements:
SELECT * FROM users;
All rows and columns are selected from table "Users"
SELECT firstname, lastname FROM users AS u WHERE u.id = 25;
One row returned with the first and last name where the id is 25.
INSERT INTO users (firstname, lastname) VALUES(James, Bond);
(assuming quotes were used) A new row is added to the table "users" with the values 'James' and 'Bond'.
UPDATE users SET firstname=Rube, lastname=Goldberg WHERE users.id=420;
(assuming quotes were used)The firstname is assigned the value 'Rube' and the lastname is assigned the value 'Goldburg' where the ID is 420 in the table users
DELETE FROM users WHERE firstname=Rube;
(assuming quotes were used)ALL rows are deleted from the table users where the firstname = 'Rube'
SELECT * FROM users ORDER BY lastname DESC;
All rows are returned in descending order by lastname
// sumitha M9Ex2: Prepared Statements Create a prepared statement script.
Add a try/catch construct.
Add a new customer record binding the customer parameters.
==================================SOLUTION
<?php
ini_set('display_errors', 1);
echo '<pre>';
try {
// Get the connection instance
//$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant');
// Set error mode attribute
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo 'Successful connection';
echo PHP_EOL;
$stmt = $pdo->prepare('INSERT INTO customers (firstname, lastname) VALUES(?, ?)');
$stmt->execute(array('Sumitha', 'Samy'));
if ($stmt->rowCount()) {
echo 'New customer added successfully';
} else {
echo 'Unable to add customer';
}
} catch (PDOException $e ){
// Handle exception...
echo "Error: " . $e->getMessage();
}
echo'</pre>';
// bob M9Ex3: Stored Procedures Create a stored procedure script.
Add the SQL to the database.
Call the stored procedure with parameters.
//-------------------- create the PROCEDURE
Drop proceedure If Exists library.newBook;
Delimiter $
Create Procedure library.newBook(
p_Author varchar(100),
p_Title varchar (255) )
BEGIN
Insert into Books(Author, Title) values(p_Author, p_Title);
END
$
DELIMITER ;
//------------------- call the procedure
$pdo->setAttribute (PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION):
$stmt = $PDO->prepare('CALL newBook (?,?)');
$Author = 'Bob Builder';
$Title = 'Treehouses';
If ($stmt->execute([$Author, $Title])) {
echo " New Book $title added";
}
// sumitha M9Ex4: Transactions Create a transaction script.
Execute two SQL statements.
Handle any exceptions.
Create a failed and a successful transaction
<?php
ini_set('display_errors', 1);
echo '<pre>';
try {
// Get the connection instance
//$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant');
// Set error mode attribute
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo 'Successful connection';
echo PHP_EOL;
$pdo->beginTransaction();
$sql = "INSERT INTO customers (firstname, lastname) VALUES('John', 'Cook')";
$count = $pdo->exec($sql);
$sql = "INSERT INTO customers (first, lastname) VALUES ('David', 'Coolidge')";
$count = $pdo->exec($sql);
$pdo->commit();
echo "New customers added successfully";
}
catch (PDOException $e ){
// Handle exception...
echo "Error: " . $e->getMessage();
$pdo->rollBack();
}
echo'</pre>';
================================================================================ RESULT: Successful connection Error: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'first' in 'field list'
<?php
ini_set('display_errors', 1);
echo '<pre>';
try {
// Get the connection instance
//$options = [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION];
$pdo = new PDO('mysql:host=localhost;dbname=course','root','vagrant');
// Set error mode attribute
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo 'Successful connection';
echo PHP_EOL;
$pdo->beginTransaction();
$sql = "INSERT INTO customers (firstname, lastname) VALUES('John', 'Cook')";
$count = $pdo->exec($sql);
//$sql = "INSERT INTO customers (first, lastname) VALUES ('David', 'Coolidge')";
$sql = "INSERT INTO customers (firstname, lastname) VALUES ('David', 'Coolidge')";
$count = $pdo->exec($sql);
$pdo->commit();
echo "New customers added successfully";
}
catch (PDOException $e ){
// Handle exception...
echo "Error: " . $e->getMessage();
$pdo->rollBack();
}
echo'</pre>';
====================================================================================== RESULT: Successful connection New customers added successfully
Mon 17 Apr 2017: http://collabedit.com/re8xu
// leslie M6Ex1: Exercise Write code which writes the contents of an array to a CSV file.
<?php
// starting code
$data = [
['Fred','Flintstone','301 Cobblestone Way','Bedrock','70777'],
['Wilma','Flintstone','301 Cobblestone Way','Bedrock','70777'],
['Barney','Rubble','302 Cobblestone Way','Bedrock','70777'],
['Betty','Rubble','302 Cobblestone Way','Bedrock','70777']
];
$filehandler = fopen("addresses.csv","w");
foreach ($data as $fields) {
fputcsv($filehandler, $fields);
}
/* which one works better?
foreach ($data as $line){
fputcsv($filehandler,explode(',',$line));
//fputcsv($filehandler, $line);
}
*/
fclose($filehandler);
// OR
<?php
ini_set('display_errors', 1);
echo '<pre>';
// starting code
$data = [
['Fred','Flintstone','301 Cobblestone Way','Bedrock','80888'],
['Wilma','Flintstone','301 Cobblestone Way','Bedrock','80888'],
['Barney','Rubble','302 Cobblestone Way','Bedrock','80888'],
['Betty','Rubble','302 Cobblestone Way','Bedrock','80888']
];
$obj = new SplFileObject('addresses.csv','w');
foreach ($data as $fields) {
$obj->fputcsv($fields);
}
echo'</pre>';
// bob M6Ex2: Exercise
Using file_get_contents(), get the contents of the zend.com website and display the result
<?php
$contents = file_get_contents('http://zend.com');
if ($contents)
{
echo $contents;
}
else
{
echo '<h3>Site Not Found</h3>';
}
// sumitha M6Ex3: Exercise Read the directories and files in the class project root and output the following:
File Name File Size Number of lines in the file
===========SOLUTION===========================
<?php
ini_set('display_errors', 1);
echo '<pre>';
$path = realpath('');
$dir = opendir($path);
while ($file = readdir($dir)) {
if (is_dir("$path/$file")) {
if ($file != '.' && $file != '..') {
echo 'Directory: ' . $file . PHP_EOL;
}
}
else {
echo 'File name: ' . $file . PHP_EOL;
echo 'File size: ' . filesize("$path/$file") . PHP_EOL;
}
}
echo'</pre>';
============================================== ================RECURSIVE ITERATOR===============
<?php
ini_set('display_errors', 1);
echo '<pre>';
$path = realpath('');
<?php
ini_set('display_errors', 1);
echo '<pre>';
$path = __DIR__;
// Recursive Iterator
$objects = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator($path),
RecursiveIteratorIterator::SELF_FIRST);
foreach($objects as $dir){
if ($dir->isDir()) {
if ($dir != '.' && $dir != '..') {
echo $dir->getFilename() . ' is a directory' . PHP_EOL;
continue;
}
}
else {
echo $dir->getFilename() . ' is a file' . PHP_EOL;
echo $dir->getSize() . ' is the file size' . PHP_EOL;
}
}
echo'</pre>';
=================================================
// examples
<?php
function getCount( $counter )
{
if (!file_exists($counter)) touch($counter);
/*
$fh = fopen( $counter, 'r' );
//get the current count
$num = (int) fread( $fh, 10 );
fclose( $fh );
*/
//$num = (int) file_get_contents($counter);
$fObj = new SplFileObject($counter, 'r+');
$num = (int) $fObj->fread(10);
//write the new number
/*
$fh = fopen( $counter, 'w' );
fwrite( $fh, ++$num, 10 );
fclose( $fh );
*/
//file_put_contents($counter, ++$num);
$fObj->rewind();
$fObj->fwrite(++$num, 10 );
unset($fObj);
return $num;
}
echo 'Hit count: ' . getCount('counter.txt') . PHP_EOL;
echo 'Hit count: ' . getCount('counter.txt') . PHP_EOL;
echo 'Hit count: ' . getCount('counter.txt') . PHP_EOL;
Tue 18 Apr 2017 + Weds 19 Apr 2017: http://collabedit.com/dg2y9
// example form
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>PHP for Exp Programmers</title>
</head>
<body>
<form method="post" action="http://oop-sandbox/test.php">
First Name: <input type="text" name="fname" />
<br>
Last Name: <input type="text" name="lname" />
<br>
Options #0:
<input type="checkbox" name="options[0][]" value="f" />Facebook
<input type="checkbox" name="options[0][]" value="g" />Google
<input type="checkbox" name="options[0][]" value="t" />Twitter
<br>
Options #1:
<input type="checkbox" name="options[1][facebook]" value="1" />Facebook
<input type="checkbox" name="options[1][google]" value="1" />Google
<input type="checkbox" name="options[1][twitter]" value="1" />Twitter
<br>
<input type="submit" />
</form>
</body>
</html>
<?php
ini_set('display_errors', 1);
// how do I confirm "google" is selected as an option?
echo 'Google Selected: ';
// y or n
echo (isset($_POST['options'][1]['google'])) ? 'Y' : 'N';
echo '<br>';
echo '<hr>';
phpinfo(INFO_VARIABLES);
<?php
ini_set('display_errors', 1);
$firstname = "<script>alert('document.cookie')</script>";
// example of filtering
$clean[0]['firstname'] = strip_tags($firstname);
// example of safeguarding ouput (i.e. output escaping)
$clean[1]['firstname'] = htmlspecialchars($firstname);
var_dump($clean);
// Leslie M6Ex1: Exercise Only using PHP, build a simple login form.
Output the HTML to the browser
// Starting Code
$html = '<form';
// code …
$html .= '</form>';
// Bob M6Ex2: Exercise Create a script that takes input from the login form (username, password, and email address). Filter and validate all inputs. Display a message for both invalid and valid input.
Tue 18 Apr 2017: http://collabedit.com/dg2y9
// example form
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>PHP for Exp Programmers</title>
</head>
<body>
<form method="post" action="http://oop-sandbox/test.php">
First Name: <input type="text" name="fname" />
<br>
Last Name: <input type="text" name="lname" />
<br>
Options #0:
<input type="checkbox" name="options[0][]" value="f" />Facebook
<input type="checkbox" name="options[0][]" value="g" />Google
<input type="checkbox" name="options[0][]" value="t" />Twitter
<br>
Options #1:
<input type="checkbox" name="options[1][facebook]" value="1" />Facebook
<input type="checkbox" name="options[1][google]" value="1" />Google
<input type="checkbox" name="options[1][twitter]" value="1" />Twitter
<br>
<input type="submit" />
</form>
</body>
</html>
<?php
ini_set('display_errors', 1);
// how do I confirm "google" is selected as an option?
echo 'Google Selected: ';
// y or n
echo (isset($_POST['options'][1]['google'])) ? 'Y' : 'N';
echo '<br>';
echo '<hr>';
phpinfo(INFO_VARIABLES);
<?php
ini_set('display_errors', 1);
$firstname = "<script>alert('document.cookie')</script>";
// example of filtering
$clean[0]['firstname'] = strip_tags($firstname);
// example of safeguarding ouput (i.e. output escaping)
$clean[1]['firstname'] = htmlspecialchars($firstname);
var_dump($clean);
// Leslie M6Ex1: Exercise Only using PHP, build a simple login form.
Output the HTML to the browser
// Starting Code
<?php
function htmlLogin(array $config, $action)
{
$html = '<form ';
$html .= 'id="login" method="post" action="' . $action. '" method="post" accept-charset="UTF-8">';
foreach ($config as $element) {
$html .= '<br>';
if (isset($element['label'])) {
$html .= '<label for="' . $element['name'] . '" >' . $element['label'] . '*:</label>';
}
$html .= '<input ';
foreach ($element as $attrib => $value) {
if ($attrib != 'label') {
$html .= $attrib . '=' . $value . ' ';
}
}
$html .= '/>';
}
$html .= '</form>';
return $html;
}
$config = [
['label' => 'UserName', 'type' => 'text', 'name' => 'username', 'id' => 'username', 'maxlength' => 50],
['label' => 'Address', 'type' => 'text', 'name' => 'address', 'id' => 'address', 'maxlength' => 50],
['label' => 'City', 'type' => 'text', 'name' => 'city', 'id' => 'city', 'maxlength' => 30],
['label' => 'Postal', 'type' => 'text', 'name' => 'postal', 'id' => 'postal', 'maxlength' => 10],
['type' => 'submit', 'name' => 'Submit', 'value' => 'Submit'],
];
echo htmlLogin($config, 'http://oop-sandbox/test.php');
// Bob M6Ex2: Exercise Create a script that takes input from the login form (username, password, and email address). Filter and validate all inputs. Display a message for both invalid and valid input.
-------------oops My code is not ready for prime time fokes. Sorry -----------------------------
// examples
<?php
class User
{
protected $firstname;
protected $lastname;
protected $date;
// -------- MAGIC METHOD -------- //
public function __construct( $firstname , $lastname, $date = NULL )
{
$this->setFirstName($firstname);
$this->lastname = $lastname ;
$this->setDate($date);
}
// other methods not shown ...
public function setFirstName($name)
{
$this->firstname = $name;
}
public function setDate($date)
{
if (is_string($date)) {
$this->date = new DateTime($date);
} elseif ($date instanceof DateTime) {
$this->date = $date;
} else {
$this->date = new DateTime();
}
}
}
$user[] = new User ( 'Jack' , 'Ryan', '2016-01-01');
$user[] = new User ( 'Monte' , 'Python' );
$user[] = new User ( 'James' , 'Bond' );
var_dump($user);
// very simple autoloader example:
<?php
function __autoload($class)
{
require_once $class . '.php';
}
$guest = new GuestUser('Fred', 'Flintstone', 'Caveman');
var_dump($guest);
// assumes we have class definitions in the same directory
// also assumes classname == filename
// homework for Thursday M8Ex1: Create a Class Create a class definition that represents something. Give it a constant and a few properties and methods. Set appropriate visibilities for each. Instantiate a couple of objects and execute the methods created producing some output. Create something which is realistic and appropriate to a current or future application
M8Ex2: Create an Abstract Super Class Using the code created in the previous exercise, create an extensible superclass definition Set the properties and methods that subclasses will need. Create one or more subclasses that extend the superclass with constants, properties and methods specific to the subclass Instantiate a couple of objects from the subclasses and execute the methods producing some output. Mark the class as abstract
Thu + Fri 20 + 21 Apr 2017: http://collabedit.com/trpb9
// examples
<?php
class Test
{
protected $name;
public function __construct($name)
{
$this->name = $name;
}
public function __sleep()
{
file_put_contents('test.txt', __METHOD__);
return ['name'];
}
public function __wakeup()
{
file_put_contents('test.txt', __METHOD__, FILE_APPEND);
}
}
$a = new Test(__LINE__);
$b = new Test(__LINE__);
$c = new Test(__LINE__);
$s = serialize($a);
echo $s . PHP_EOL;
$d = unserialize($s);
var_dump($d);
echo PHP_EOL;
readfile('test.txt');
<?php
class Test
{
protected $name;
public function __construct($name)
{
$this->name = $name;
}
public function __isset($var)
{
echo __METHOD__ . ' VAR: ' . $var;
}
public function __unset($var)
{
echo __METHOD__ . ' VAR: ' . $var;
}
}
$a = new Test('test');
echo (isset($a->doesntExist)) ? 'TRUE' : 'FALSE';
echo PHP_EOL;
unset($a->doesntExist);
echo PHP_EOL;
Magic get/set Unlimited getters/setters using __call __invoke() + __toString()
See how AbstractController implements EventManagerAwareInterface ZF Ref
// often interfaces and traits go together EventManagerAwareInterface EventManagerAwareTrait
// homework
// Leslie M8Ex3: Magic Methods Using the code from the previous exercises, add four magic methods.
Add a magic constructor that accepts parameters and set those parameters into the class on instantiation.
Create an index.php file, load the classes, create subclass object instances and execute method calls to the subclass objects.
// Bob M8Ex4: Interfaces Create an object interface with two methods.
Implement the interface in your superclass.
Add some code to the index.php file that calls one of the superclass methods implemented.
// Sumitha M8Ex5: Type Hints Modify all methods in existing classes so that all parameters are defined using type hints
Modify all methods in existing classes so that the return values data types are defined
// Leslie M8Ex6: Traits Create two traits, each with two methods, one of the methods named the same in both traits.
Use the trait in a subclass created thus far. Specify a new visibility and deal with the naming conflict.
//Bob M8Ex7: Namespaces Define namespaces for your classes defined in previous exercises.
Build a directory structure which matches the namespace structure
Define an auto-loader for your new namespaced classes
// Sumitha - use PDO examples M8Ex8: Exceptions Add a constructor that accepts parameters.
Call the parent constructor.
Add some new functionality in the constructor
Add a try/catch/catch/finally block in the index.php file.
In the try portion, throw an instance of the Exceptions object, and an instance of your custom exception class.
Handle both in the associated catch blocks.
Log some data in the finally block.
Thu + Fri 20 + 21 Apr 2017: http://collabedit.com/trpb9
// examples
<?php
class Test
{
protected $name;
public function __construct($name)
{
$this->name = $name;
}
public function __sleep()
{
file_put_contents('test.txt', __METHOD__);
return ['name'];
}
public function __wakeup()
{
file_put_contents('test.txt', __METHOD__, FILE_APPEND);
}
}
$a = new Test(__LINE__);
$b = new Test(__LINE__);
$c = new Test(__LINE__);
$s = serialize($a);
echo $s . PHP_EOL;
$d = unserialize($s);
var_dump($d);
echo PHP_EOL;
readfile('test.txt');
<?php
class Test
{
protected $name;
public function __construct($name)
{
$this->name = $name;
}
public function __isset($var)
{
echo __METHOD__ . ' VAR: ' . $var;
}
public function __unset($var)
{
echo __METHOD__ . ' VAR: ' . $var;
}
}
$a = new Test('test');
echo (isset($a->doesntExist)) ? 'TRUE' : 'FALSE';
echo PHP_EOL;
unset($a->doesntExist);
echo PHP_EOL;
// homework
// Leslie M8Ex3: Magic Methods Using the code from the previous exercises, add four magic methods. Add a magic constructor that accepts parameters and set those parameters into the class on instantiation. Create an index.php file, load the classes, create subclass object instances and execute method calls to the subclass objects.
// NOTE: graceful way to handle illegal access to private properties
<?php
class Movies
{
private $title;
private $actor;
public function __construct($title, $actor)
{
$this->title = $title;
$this->actor = $actor;
}
public function __get($property)
{
echo 'Unable to read this property: ' . $property . PHP_EOL;
}
public function __set($property, $value)
{
echo 'Cannot set ' . $property . ' to ' . $value . PHP_EOL;
}
public function __isset($name)
{
echo "__isset is called for $name\n";
}
public function __unset($name)
{
echo "__unset is called for $name\n";
}
}
$myMovie = new Movies('Gone With the Wind', 'Clark Gable');
$myMovie->author = 'Margaret Mitchell';
echo $myMovie->title;
echo $myMovie->actor;
echo $myMovie->author;
unset($myMovie->title);
isset($myMovie->author);
// Bob M8Ex4: Interfaces Create an object interface with two methods. Implement the interface in your superclass. Add some code to the index.php file that calls one of the superclass methods implemented.
//============ See Namespaces Below
// Sumitha M8Ex5: Type Hints Modify all methods in existing classes so that all parameters are defined using type hints
Modify all methods in existing classes so that the return values data types are defined
===================SOLUTION========================
<?php
declare(strict_types=1);
ini_set('display_errors', 1);
echo '<pre>';
abstract class AbstractArticle
{
const ARTICLECATEGORY = "Marine Life";
const EXPIRYDATE = '2016-06-06';
protected $articleTitle;
protected $articleAuthor;
protected $articleDate;
protected $articleSubCategory;
// -------- MAGIC METHOD -------- //
public function __construct( string $articleTitle , string $articleAuthor, string $articleSubCategory, $articleDate = NULL )
{
$this->setArticleTitle($articleTitle);
$this->setArticleAuthor($articleAuthor);
$this->setArticleSubCategory($articleSubCategory);
$this->setArticleDate($articleDate);
}
abstract protected function setArticleTitle(string $title);
abstract protected function setArticleAuthor(string $author);
abstract protected function setArticleSubCategory(string $subcategory);
abstract protected function setArticleDate ($date);
abstract protected function getArticletitle() : string;
abstract protected function getArticleAuthor() : string;
abstract protected function getArticleSubCategory() : string;
abstract protected function getArticleDate() : string;
}
<?php
class MyArticle1 extends AbstractArticle {
const MYNAME = 'I am Article1 sub-class';
protected $tvChannel;
public function __construct(string $articleTitle , string $articleAuthor, string $articleSubCategory, string $articleTVChannel, $articleDate = NULL) {
parent::__construct($articleTitle , $articleAuthor, $articleSubCategory, $articleDate = NULL);
$this->setTVChannel($articleTVChannel);
}
public function setArticleTitle(string $title)
{
$this->articleTitle = $title;
}
public function setArticleAuthor(string $author)
{
$this->articleAuthor = $author;
}
public function setArticleSubCategory(string $subcategory)
{
$this->articleSubCategory = $subcategory;
}
public function setArticleDate($date)
{
if (is_string($date)) {
$this->articleDate = new DateTime($date);
} elseif ($date instanceof DateTime) {
$this->articleDate = $date;
} else {
$this->articleDate = new DateTime();
}
}
public function setTVChannel(string $tvchannel) {
$this->tvChannel = $tvchannel;
}
public function getArticleTitle() : string
{
return $this->articleTitle;
}
public function getArticleAuthor() : string
{
return $this->articleAuthor;
}
public function getArticleSubCategory() : string
{
return $this->articleSubCategory;
}
public function getArticleDate() : string
{
return $this->articleDate->format('Y-m-d H:i:s');
}
public function getMainArticleCat() {
return parent::ARTICLECATEGORY;
}
public function hasExpired() : string
{
if ($this->articleDate < new DateTime(parent::EXPIRYDATE)) {
return 'Expired';
}
else {
return 'Active';
}
}
public function getTVChannel() : string
{
return $this->tvChannel;
}
}
<?php
$article1 = new MyArticle1 ( 'Swimming with the Dolphins' , 'Jack Smith', 'Intelligent Ones', 'Nat Geo Wild', '2016-01-01');
//$articles[] = new Article ( 'Should I touch them?' , 'Jane Kingsman', 'Sharks', '2017-04-01' );
//$articles[] = new Article ( 'Cute little pets' , 'Arthur Smith', 'Gold fish' );
echo 'Sub class name is: ' .$article1::MYNAME .PHP_EOL;
echo PHP_EOL;
echo 'The main category of the display articles is: ' . $article1->getMainArticleCat();
echo PHP_EOL;
echo PHP_EOL;
//var_dump($articles);
echo 'Article Title: ' .$article1->getArticleTitle() .PHP_EOL;
echo 'Article Author: ' .$article1->getArticleAuthor() .PHP_EOL;
echo 'Article Date: ' .$article1->getArticleDate() .PHP_EOL;
echo 'Article SubCategory: ' .$article1->getArticleSubCategory() .PHP_EOL;
echo 'Article TV Channel: ' .$article1->getTVChannel() .PHP_EOL;
echo 'Active/Expired: ' .$article1->hasExpired() .PHP_EOL;
echo PHP_EOL;
echo'</pre>';
=============================================================================================== // Leslie M8Ex6: Traits Create two traits, each with two methods, one of the methods named the same in both traits. Use the trait in a subclass created thus far. Specify a new visibility and deal with the naming conflict.
trait production
{
private releaseDate;
private cost;
public function setTrueDate($releaseDate)
{
$this->releaseDate = $releaseDate;
}
public function getCost
{
return this->cost;
}
}
trait showtime
{
private showDate;
private ticketRates;
public function setTrueDate($showDate)
{
$this->showDate = $showDate;
}
public function getRates($ticketRates)
{
return this->ticketRates;
}
}
class movies {
private $title;
public function __construct($title)
{
$this->title = $title;
}
use production, showtime
{
showtime::setTrueDate insteadof production;
}
}
//Bob M8Ex7: Namespaces Define namespaces for your classes defined in previous exercises. Build a directory structure which matches the namespace structure Define an auto-loader for your new namespaced classes
// ************* The code fails to run as I expected ********************************
//========================================== Interface & Superclass ========================
<?php
namespace Loader;
use Exception;
class Autoloader
{
public static $dirs = [];
public static function initDirs($dirs)
{
self::$dirs = $dirs;
}
public static function autoload($class)
{
$fn = str_replace('\\', '/', $class) . '.php';
foreach (self::$dirs as $dir) {
if (file_exists($dir . '/' . $fn)) {
require_once($dir . '/' . $fn);
return true;
}
}
throw new \Exception('Unable to load class');
}
}
<?php
namespace Financial;
// code location ...workspaces\DefaultWorkspace\currency.php
// Superclass Implement the interface
class Currency implements Icurrency
{
protected $amount;
protected $medium;
public function __construct($amount)
{
$this->amount = $amount;
$this->medium = 'Am I lucky that Wordpress will not be using classes';
}
public function setMedium($medium)
{
$this->medium = $medium;
}
public function getValue()
{
return $this->amount . ' ' . $this->medium;
}
}
<?php
namespace Financial;
// code location ...workspaces\DefaultWorkspace\currency.php
// Declare the interface 'icurrencye'
interface Icurrency
{
public function setMedium($medium);
public function getValue();
}
<?php
require __DIR__ . '/Loader/Autoloader.php';
Loader\Autoloader::initDirs([__DIR__]);
spl_autoload_register('Loader\Autoloader::autoload');
$mycurrency = new Financial\Currency(99.99);
echo $mycurrency->getValue();
//phpinfo();
// Sumitha - use PDO examples M8Ex8: Exceptions Add a constructor that accepts parameters.
Call the parent constructor.
Add some new functionality in the constructor
Add a try/catch/catch/finally block in the index.php file.
In the try portion, throw an instance of the Exceptions object, and an instance of your custom exception class.
Handle both in the associated catch blocks.
Log some data in the finally block.
====================SOLUTION==== Did not get to complete the exercise ======================
<?php
ini_set('display_errors', 1);
echo '<pre>';
class AbstractDBConnection {
protected $pdo;
public function __construct (string $db, $userName, $password) {
$this->setPdo($db, $userName, $password);
}
public function setPdo(string $db, string $userName, string $password) {
$this->pdo = new PDO("mysql:host=localhost;dbname=' .$db .',' .$userName .',' .$password .'");
}
}
class Customers extends AbstractDBConnection {
const CONN_OPEN_FAIL = 'Error in opening DB connection';
const QUERY_EXEC_FAIL = 'Error in running query';
const SUCCESS_MSG = 'Successful';
protected $sql;
public function __construct(string $db, $userName, $password) {
try {
parent::__construct($db, $userName, $password);
}
catch (PDOException $e) {
echo self::CONN_OPEN_FAIL . ' ' . $e->getMessage();
}
}
public function setSql (string $statement) {
$this->sql = $statement;
}
public function runQuery ()
}
// examples
<?php
ini_set('display_errors', 1);
session_start();
setcookie('test', date('Y-m-d H:i:s'), time()+300);
$_SESSION['test'] = date('Y-m-d H:i:s');
phpinfo(INFO_VARIABLES);
INSTALL PHP SOAP IN VM:
sudo apt-get update
sudo apt-get install php-soap
sudo service apache2 restart
<?php
// Make a request for JSON
$url = 'http://maps.googleapis.com/maps/api/geocode/json?address=350+5th+Avenue+New+York,+NY&sensor=false';
$json = file_get_contents($url);
// Decode into a standard class object
$resultsObj = json_decode($json);
// Decode into an array
$resultsArr = json_decode($json, true);
var_dump($resultsArr);
// Make a request for XML
$url = 'http://maps.googleapis.com/maps/api/geocode/xml?address=350+5th+Avenue+New+York,+NY&sensor=false';
$xml = file_get_contents($url);
// Load a SimpleXmlElement object
$smplxml = simplexml_load_string($xml);
// Output something
echo $smplxml->asXml();
// regex example
$data = ['<a href="http://zend.com">Test</a>', "<a href='https://unlikelysource.com'>Test</a>"];
$pattern = '/<a.*?href=("|\')(.*?)("|\').*?>/';
foreach ($data as $url) {
preg_match($pattern, $url, $matches);
var_dump($matches);
}