method_exists
(PHP 4, PHP 5, PHP 7, PHP 8)
method_exists — Checks if the class method exists
Description
method_exists(object|string
$object_or_class, string $method): bool
Checks if the class method exists in the given
object_or_class.
Parameters
-
object_or_class -
An object instance or a class name
-
method -
The method name
Return Values
Returns true if the method given by method
has been defined for the given object_or_class, false
otherwise.
Examples
Example #1 method_exists() example
<?php
$directory = new Directory('.');
var_dump(method_exists($directory,'read'));
?>
The above example will output:
bool(true)
Example #2 Static method_exists() example
<?php
var_dump(method_exists('Directory','read'));
?>
The above example will output:
bool(true)
Notes
Note:
Using this function will use any registered autoloaders if the class is not already known.
See Also
- function_exists() - Return true if the given function has been defined
- is_callable() - Verify that a value can be called as a function from the current scope.
- class_exists() - Checks if the class has been defined
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