PHP property_exists() function usage and example

PHP Class/Object function reference manual

The property_exists() function checks whether an object or class has the specified property

Syntax

property_exists ($object, $property);

Definition and usage

This function checks whether the given property exists in the specified class (and whether it can be accessed from the current scope).

Parameter

Return value

If the property exists, it returns TRUE; if the property does not exist, it returns FALSE; if an error occurs, it returns NULL.

Online examples

The following is the usage of this function-

<?php
class myClass {
　　　　public $mine;
　　　　private $xpto;
　　　　static protected $test;
　　　　static function test() {
　　　　　　　　var_dump(property_exists('myClass', 'xpto'));　//true
　　　　}
}
var_dump(property_exists('myClass', 'mine'));　　　//true
var_dump(property_exists(new myClass, 'mine'));　//true
var_dump(property_exists('myClass', 'xpto'));　　　//true, from PHP　5.3From version .0
var_dump(property_exists('myClass', 'bar'));　　　　//false
var_dump(property_exists('myClass', 'test'));　　　//true, from PHP　5.3From version .0
myClass::test();
?>

PHP Class/Object function reference manual