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Title: PHP: function_exists - Manual

X Title: PHP: function_exists - Manual

Open Graph Description: Return true if the given function has been defined

X Description: Return true if the given function has been defined

X: @official_php

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Domain: php.net

DescriptionReturn true if the given function has been defined
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func_​get_​argshttps://php.net/function.func-get-args.php
func_​num_​argshttps://php.net/function.func-num-args.php
function_​existshttps://php.net/function.function-exists.php
get_​defined_​functionshttps://php.net/function.get-defined-functions.php
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