property_exists(3) [php man page]

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)

GET_CLASS(3)								 1							      GET_CLASS(3)

get_class - Returns the name of the class of an object

SYNOPSIS

       string get_class NULL ([object  $object])

DESCRIPTION

	Gets the name of the class of the given $object.

PARAMETERS

	      o $object
		- The tested object. This parameter may be omitted when inside a class.

RETURN VALUES

	Returns the name of the class of which $object is an instance. Returns FALSE if $object is not an object.

	If $object is omitted when inside a class, the name of that class is returned.

ERRORS
/EXCEPTIONS
	If get_class(3) is called with anything other than an object, an E_WARNING level error is raised.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.0	|						    |
       |	|						    |
       |	|						    |
       |	| NULL	became	the  default  value for $object, so |
       |	| passing NULL to $object now has the  same  result |
       |	| as not passing any value.			    |
       |	|						    |
       | 5.0.0	|						    |
       |	|						    |
       |	|  The class name is returned in its original nota- |
       |	| tion. 					    |
       |	|						    |
       | 5.0.0	|						    |
       |	|						    |
       |	|  The $object parameter is optional if called from |
       |	| the object's method.				    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      Using get_class(3)

	      <?php

	      class foo {
		  function name()
		  {
		      echo "My name is " , get_class($this) , "
";
		  }
	      }

	      // create an object
	      $bar = new foo();

	      // external call
	      echo "Its name is " , get_class($bar) , "
";

	      // internal call
	      $bar->name();

	      ?>

	      The above example will output:

	      Its name is foo
	      My name is foo

       Example #2

	      Using get_class(3) in superclass

	      <?php

	      abstract class bar {
		  public function __construct()
		  {
		      var_dump(get_class($this));
		      var_dump(get_class());
		  }
	      }

	      class foo extends bar {
	      }

	      new foo;

	      ?>

	      The above example will output:

	      string(3) "foo"
	      string(3) "bar"

SEE ALSO

       get_called_class(3), get_parent_class(3), gettype(3), is_subclass_of(3).

PHP Documentation Group 													      GET_CLASS(3)