<?php
include("class.db.php");
$version = "1.0.1";
$released = "November 28, 2010";
?>
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<a href="http://code.google.com/p/php-pdo-wrapper-class/">Homepage - Google Code Project Hosting</a>
<a href="http://php-pdo-wrapper-class.googlecode.com/files/ppwc-<?php echo($version);?>.zip">Download Version <?php echo $version;?></a>
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<h2>PHP PDO Wrapper Class</h2>
<ul>
<li>Version: <?php echo $version;?></li>
<li>Released: <?php echo $released;?></li>
</ul>
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<h2 class="first">Table of Contents</h2>
<ul>
<li><a href="#project-overview">Project Overview</a></li>
<li><a href="#system-requirements">System Requirements</a></li>
<li><a href="#db-class-constructor">db Class Constructor</a></li>
<li><a href="#db-class-methods">db Class Methods</a></li>
<li class="indent"><a href="#debug">debug</a></li>
<li class="indent"><a href="#delete">delete</a></li>
<li class="indent"><a href="#insert">insert</a></li>
<li class="indent"><a href="#run">run</a></li>
<li class="indent"><a href="#select">select</a></li>
<li class="indent"><a href="#update">update</a></li>
</ul>
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<h2 class="first"><a name="project-overview">Project Overview</a></h2>
<p>This project provides a minimal extension for <a href="http://us3.php.net/manual/en/book.pdo.php">PHP's PDO (PHP Data Objects) class</a> designed for ease-of-use and saving development time/effort.
This is achived by providing methods - delete, insert, select, and update - for quickly building common SQL statements, handling exceptions when
SQL errors are produced, and automatically returning results/number of affected rows for the appropriate SQL statement types.</p>
<h2><a name="system-requirements">System Requirements</a></h2>
<ul>
<li>PHP 5</li>
<li>PDO Extension</li>
<li>Appropriate PDO Driver(s) - PDO_SQLITE, PDO_MYSQL, PDO_PGSQL</li>
<li>Only MySQL, SQLite, and PostgreSQL database types are currently supported.</li>
</ul>
<h2><a name="db-class-constructor">db Class Constructor</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//__contruct Method Declaration
public function __construct($dsn, $user="", $passwd="") { }
//MySQL
$db = new db("mysql:host=127.0.0.1;port=8889;dbname=mydb", "dbuser", "dbpasswd");
//SQLite
$db = new db("sqlite:db.sqlite");
?>', true), '</pre>';
?>
<p>More information can be found on how to set the dsn parameter by following the links provided below.</p>
<ul>
<li>MySQL - <a href="http://us3.php.net/manual/en/ref.pdo-mysql.connection.php">http://us3.php.net/manual/en/ref.pdo-mysql.connection.php</a></li>
<li>SQLite - <a href="http://us3.php.net/manual/en/ref.pdo-sqlite.connection.php">http://us3.php.net/manual/en/ref.pdo-sqlite.connection.php</a></li>
<li>PostreSQL - <a href="http://us3.php.net/manual/en/ref.pdo-pgsql.connection.php">http://us3.php.net/manual/en/ref.pdo-pgsql.connection.php</a></li>
</ul>
<h2><a name="db-class-methods">db Class Methods</a></h2>
<p>Below you will find a detailed explanation along with code samples for each of the 6 methods included in the db class.</p>
<h2><a name="debug">debug</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//debug Method Declaration
public function debug() { }
if(false !== $db->select("mytable")) {
//Continue
}
else
$db->debug();
?>', true), '</pre>';
?>
<p>When a SQL statement fails, the appropriate function (delete, insert, select, update, run) will return boolean false. The project's debug method
allows you to see the full SQL statement, bind parameters, and error message.</p>
<h2><a name="delete">delete</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//delete Method Declaration
public function delete($table, $where, $bind="") { }
//DELETE #1
$db->delete("mytable", "Age < 30");
//DELETE #2 w/Prepared Statement
$lname = "Doe";
$bind = array(
":lname" => $lname
)
$db->delete("mytable", "LName = :lname", $bind);
?>', true), '</pre>';
?>
<p>If no SQL errors are produced, this method will return the number of rows affected by the DELETE statement.</p>
<h2><a name="insert">insert</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//insert Method Declaration
public function insert($table, $info) { }
$insert = array(
"FName" => "John",
"LName" => "Doe",
"Age" => 26,
"Gender" => "male"
);
$db->insert("mytable", $insert);
?>', true), '</pre>';
?>
<p>If no SQL errors are produced, this method will return the number of rows affected by the INSERT statement.</p>
<h2><a name="run">run</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//run Method Declaration
public function run($sql, $bind="") { }
//MySQL
$sql = <<<STR
CREATE TABLE mytable (
ID int(11) NOT NULL AUTO_INCREMENT,
FName varchar(50) NOT NULL,
LName varchar(50) NOT NULL,
Age int(11) NOT NULL,
Gender enum(\'male\',\'female\') NOT NULL,
PRIMARY KEY (ID)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=11 ;
STR;
$db->run($sql);
//SQLite
$sql = <<<STR
CREATE TABLE mytable (
ID INTEGER PRIMARY KEY,
LName TEXT,
FName TEXT,
Age INTEGER,
Gender TEXT
)
STR;
$db->run($sql);
?>', true), '</pre>';
?>
<p>This method is used to run free-form SQL statements that can't be handled by the included delete, insert, select, or update methods.
If no SQL errors are produced, this method will return the number of affected rows for DELETE, INSERT, and UPDATE statements, or an associate array of results for
SELECT, DESCRIBE, and PRAGMA statements.</p>
<h2><a name="select">select</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//select Method Declaration
public function select($table, $where="", $bind="", $fields="*") { }
//SELECT #1
$results = $db->select("mytable");
//SELECT #2
$results = $db->select("mytable", "Gender = \'male\'");
//SELECT #3 w/Prepared Statement
$search = "J";
$bind = array(
":search" => "%$search"
);
$results = $db->select("mytable", "FName LIKE :search", $bind);
?>', true), '</pre>';
?>
<p>If no SQL errors are produced, this method will return an associative array of results.</p>
<h2><a name="update">update</a></h2>
<?php
echo '<pre>', highlight_string('<?php
//update Method Declaration
public function update($table, $info, $where, $bind="") { }
//Update #1
$update = array(
"FName" => "Jane",
"Gender" => "female"
);
$db->update("mytable", $update, "FName = \'John\'");
//Update #2 w/Prepared Statement
$update = array(
"Age" => 24
);
$fname = "Jane";
$lname = "Doe";
$bind = array(
":fname" => $fname,
":lname" => $lname
);
$db->update("mytable", $update, "FName = :fname AND LName = :lname", $bind);
?>', true), '</pre>';
?>
<p>If no SQL errors are produced, this method will return the number of rows affected by the UPDATE statement.</p>
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