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# method_exists

(PHP 4 , PHP 5)

method_exists -- Checks if the class method exists

## Description

bool method_exists ( object object, string method_name)

This function returns `TRUE` if the method given by method_name has been defined for the given object, `FALSE` otherwise.

示範 1.method_exists() example

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

This script will output :

    bool(true)

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