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A class is the blueprint code that create an object.
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Example
<?php
class Foo {
// A variable
public $myPublicVar = 'value';
private $myPrivateVar = 'value';
// A constant
const CONSTANT = 'constant value';
function showVariable() {
print 'Print a variable '.$this->myPublicVar;
}
function showConstant() {
echo self::CONSTANT . "\n";
}
public static function aStaticMethod() {
// ...
}
}
Operator
instanceof
$a instanceof $b