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demo.php
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<?php
/*
* PHP-PDO-MySQL-Class
* https://github.com/lincanbin/PHP-PDO-MySQL-Class
*
* Copyright 2014, Lin Canbin
* http://www.94cb.com/
*
* Licensed under the Apache License, Version 2.0:
* http://www.apache.org/licenses/LICENSE-2.0
*
* A PHP MySQL PDO class similar to the Python MySQLdb.
*/
?>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>
PHP-PDO-MySQL-Class
</title>
</head>
<body marginheight="0" style="zoom: 1;">
<h1>
PHP-PDO-MySQL-Class
</h1>
<p>
A PHP MySQL PDO class similar to the Python MySQLdb.
</p>
<h2>
Initialize
</h2>
<pre>
<code class="lang-php">
<?php
define('DBHost', '127.0.0.1');
define('DBName', 'Database');
define('DBUser', 'root');
define('DBPassword', '');
require(dirname(__FILE__)."/src/PDO.class.php");
$DB = new Db(DBHost, DBName, DBUser, DBPassword);
?>
</code>
</pre>
<?php
/*
The following parameters must be modified before running this DEMO.
*/
define('DBHost', '127.0.0.1');
define('DBPort', 3306);
define('DBName', 'test');
define('DBUser', 'root');
define('DBPassword', '');
require(dirname(__FILE__)."/src/PDO.class.php");
$DB = new Db(DBHost, DBPort, DBName, DBUser, DBPassword);
?>
<h2>
Preventing SQL Injection Attacks
</h2>
<h4>
Safety: Use parameter binding method
</h4>
<p>
Safety Example:
</p>
<pre>
<code class="lang-php">
<?php
$DB->query("SELECT * FROM fruit WHERE name=?", array($_GET['name']));
?>
</code>
</pre>
<h4>
Unsafety: Split joint SQL string
</h4>
<p>
Unsafety Example:
</p>
<pre>
<code class="lang-php">
<?php
$DB->query("SELECT * FROM fruit WHERE name=".$_GET['name']);
?>
</code>
</pre>
<h2>
Usage
</h2>
<h4>
table "fruit"
</h4>
<p>
<table>
<thead>
<tr>
<th align="center">id</th>
<th align="center">name</th>
<th align="center">color</th>
</tr>
</thead>
<tbody>
<tr>
<td align="center">1</td>
<td align="center">apple</td>
<td align="center">red</td>
</tr>
<tr>
<td align="center">2</td>
<td align="center">banana</td>
<td align="center">yellow</td>
</tr>
<tr>
<td align="center">3</td>
<td align="center">watermelon</td>
<td align="center">green</td>
</tr>
<tr>
<td align="center">4</td>
<td align="center">pear</td>
<td align="center">yellow</td>
</tr>
<tr>
<td align="center">5</td>
<td align="center">strawberry</td>
<td align="center">red</td>
</tr>
</tbody>
</table>
</p>
<?php
$DB->query("DROP TABLE IF EXISTS `fruit`;");
$DB->query("CREATE TABLE IF NOT EXISTS `fruit` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(32) NOT NULL,
`color` varchar(32) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;");
$AffectedRows = $DB->query("INSERT INTO `fruit` (`id`, `name`, `color`) VALUES
(1, 'apple', 'red'),
(2, 'banana', 'yellow'),
(3, 'watermelon', 'green'),
(4, 'pear', 'yellow'),
(5, 'strawberry', 'red');
");//return 5, the number of affected rows by this INSERT/ UPDATE/ DELETE
//echo $AffectedRows;
?>
<h4>
Fetching with Bindings (ANTI-SQL-INJECTION):
</h4>
<pre>
<code class="lang-php">
<?php
$DB->query("SELECT * FROM fruit WHERE name=? and color=?",array('apple','red'));
$DB->query("SELECT * FROM fruit WHERE name=:name and color=:color",array('name'=>'apple','color'=>'red'));
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
var_export($DB->query("SELECT * FROM fruit WHERE name=:name and color=:color",array('name'=>'apple','color'=>'red')));
?>
</code>
</pre>
<h4>
WHERE IN:
</h4>
<pre>
<code class="lang-php">
<?php
$DB->query("SELECT * FROM fruit WHERE name IN (?)",array('apple','banana'));
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
var_export($DB->query("SELECT * FROM fruit WHERE name IN (?)",array('apple','banana')));
?>
</code>
</pre>
<h4>
Fetching Column:
</h4>
<pre>
<code class="lang-php">
<?php
$DB->column("SELECT color FROM fruit WHERE name IN (?)",array('apple','banana','watermelon'));
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
var_export($DB->column("SELECT color FROM fruit WHERE name IN (?)",array('apple','banana','watermelon')));
?>
</code>
</pre>
<h4>
Fetching Row:
</h4>
<pre>
<code class="lang-php">
<?php
$DB->row("SELECT * FROM fruit WHERE name=? and color=?",array('apple','red'));
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
var_export($DB->row("SELECT * FROM fruit WHERE name=? and color=?",array('apple','red')));
?>
</code>
</pre>
<h4>
Fetching single:
</h4>
<pre>
<code class="lang-php">
<?php
$DB->single("SELECT color FROM fruit WHERE name=? ",array('watermelon'));
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
echo $DB->single("SELECT color FROM fruit WHERE name=? ",array('watermelon'));
?>
</code>
</pre>
<h4>
Delete / Update / Insert
</h4>
<p>
These operations will return the number of affected result set. (integer)
</p>
<pre>
<code class="lang-php">
<?php
// Delete
$DB->query("DELETE FROM fruit WHERE id = :id", array("id"=>"1"));
$DB->query("DELETE FROM fruit WHERE id = ?", array("1")); // Update
$DB->query("UPDATE fruit SET color = :color WHERE name = :name", array("name"=>"strawberry","color"=>"yellow"));
$DB->query("UPDATE fruit SET color = ? WHERE name = ?", array("yellow","strawberry"));
// Insert
$DB->query("INSERT INTO fruit(id,name,color) VALUES(?,?,?)",array(null,"mango","yellow"));//Parameters must be ordered
$DB->query("INSERT INTO fruit(id,name,color) VALUES(:id,:name,:color)", array("color"=>"yellow","name"=>"mango","id"=>null));//Parameters order free
?>
</code>
</pre>
<?php
// Delete
$DB->query("DELETE FROM fruit WHERE id = :id", array("id"=>"1"));
$DB->query("DELETE FROM fruit WHERE id = ?", array("1")); // Update
$DB->query("UPDATE fruit SET color = :color WHERE name = :name", array("name"=>"strawberry","color"=>"yellow"));
$DB->query("UPDATE fruit SET color = ? WHERE name = ?", array("yellow","strawberry"));
// Insert
$DB->query("INSERT INTO fruit(id,name,color) VALUES(?,?,?)",array(null,"mango","yellow"));//Parameters must be ordered
$DB->query("INSERT INTO fruit(id,name,color) VALUES(:id,:name,:color)", array("color"=>"yellow","name"=>"mango","id"=>null));//Parameters order free
?>
<h4>
Get Last Insert ID
</h4>
<pre>
<code class="lang-php">
<?php
$DB->lastInsertId();
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
ID for array("color"=>"yellow","name"=>"mango","id"=>null):
<?php
echo $DB->lastInsertId();
?>
</code>
</pre>
<h4>
Get the number of queries since the object initialization
</h4>
<pre>
<code class="lang-php">
<?php
$DB->querycount;
?>
</code>
</pre>
<p>
Result:
</p>
<pre>
<code class="lang-php">
<?php
echo $DB->querycount;
?> SQL Queries in this page.
</code>
</pre>
</body>
</html>