How to determine whether a class method exists in php

php method to determine whether a class method exists: You can use the method_exists() function to determine. The specific usage method is: [method_exists($directory,'read')]. The method_exists() function checks whether a class method exists in the specified object.

Function definition:

(Recommended tutorial:php graphic tutorial)

method_exists( ) function checks whether a class method exists in the specified object. If the method pointed to by method_name has been defined in the object class pointed to by object, then TRUE is returned, otherwise FALSE is returned.

Function syntax:

bool method_exists ( mixed $object , string $method_name )

(Video tutorial recommendation:php video tutorial)

Code implementation:

$directory=new Directory; if(!method_exists($directory,'read')){ echo '未定义read方法！'; }

The above is the detailed content of How to determine whether a class method exists in php. For more information, please follow other related articles on the PHP Chinese website!