method_exists(3) [php man page]

METHOD_EXISTS(3)							 1							  METHOD_EXISTS(3)

method_exists - Checks if the class method exists

SYNOPSIS

       bool method_exists (mixed  $object, string  $method_name)

DESCRIPTION

	Checks if the class method exists in the given $object.

PARAMETERS

	      o $object
		- An object instance or a class name

	      o $method_name
		- The method name

RETURN VALUES

	Returns TRUE if the method given by $method_name has been defined for the given $object, FALSE otherwise.

NOTES

       Note

	      Using this function will use any registered autoloaders if the class is not already known.

EXAMPLES

       Example #1

	      method_exists(3) example

	      <?php
	      $directory = new Directory('.');
	      var_dump(method_exists($directory,'read'));
	      ?>

	      The above example will output:

	      bool(true)

       Example #2

	      Static method_exists(3) example

	      <?php
	      var_dump(method_exists('Directory','read'));
	      ?>

	      The above example will output:

	      bool(true)

SEE ALSO

       function_exists(3), is_callable(3), class_exists(3).

PHP Documentation Group 													  METHOD_EXISTS(3)

PROPERTY_EXISTS(3)							 1							PROPERTY_EXISTS(3)

property_exists - Checks if the object or class has a property

SYNOPSIS

       bool property_exists (mixed  $class, string  $property)

DESCRIPTION

	This function checks if the given $property exists in the specified class.

       Note

	       As opposed with isset(3), property_exists(3) returns TRUE even if the property has the value NULL.

PARAMETERS

	      o $class
		- The class name or an object of the class to test for

	      o $property
		- The name of the property

RETURN VALUES

	Returns TRUE if the property exists, FALSE if it doesn't exist or NULL in case of an error.

NOTES

       Note

	      Using this function will use any registered autoloaders if the class is not already known.

       Note

	       The property_exists(3) function cannot detect properties that are magically accessible using the __get magic method.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|  This function checks the existence of a property |
       |	| independent of accessibility. 		    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      A property_exists(3) example

	      <?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, as of PHP 5.3.0
	      var_dump(property_exists('myClass', 'bar'));    //false
	      var_dump(property_exists('myClass', 'test'));   //true, as of PHP 5.3.0
	      myClass::test();

	      ?>

SEE ALSO

       method_exists(3).

PHP Documentation Group 													PROPERTY_EXISTS(3)