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if ($foo > $bar) {
    echo "foo is greater";
}
else {
    echo "bar is greater";
}

$i = 5;
do {
    echo $i--;
} while ($i > 0);

Classes

Declaration

Class names should be CamelCased. Only a single class should appear in a file. Class file names should correlate to the class name, be lowercase, and use underscores to separate words. Class constructors should be named using the __construct() magic method.

<?php
// Class name starts with a lower case letter
class myClass {
    // Constructor should be named __construct()
    public function myClass() {
    }
}
?>

<?php 
class MyClass {
    public function __construct() {
    }
}
?>

Member Variables

All member variables should be declared at the top of the class, before any methods are declared. Variables must always declare their visibility using public, private, or protected.

<?php
class MyClass {
    // Can not use var, must use public, private, or protected
    var $foo;

    public function __construct() {
    }
    
    // Must be declared at the top of the class
    private $bar = "baz";
}
?>

<?php
class MyClass {
    public $foo;
    private $bar = "baz";

    public function __construct() {
    }
}
?>

Methods

Method names should begin with a lowercase letter and be camelCased. Type hinting should be used whenever possible, but must conform to PHP 5.1 syntax (i.e. only objects and arrays may be defined using type hints).

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