PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
get_defined_functions - Returns an array of all defined functions
Code Examples

get_defined_functions( [bool$exclude_disabled = true] ): array

Gets an array of all defined functions.



Whether disabled functions should be excluded from the return value.

Return Values

Returns a multidimensional array containing a list of all defined functions, both built-in (internal) and user-defined. The internal functions will be accessible via $arr["internal"], and the user defined ones using $arr["user"] (see example below).


Version Description
8.0.0 The default value of the exclude_disabled parameter has been changed from false to true.
7.0.15, 7.1.1 The exclude_disabled parameter has been added.

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Example of get_defined_functions

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Function get_defined_functions:

Function Handling Functions

Most used PHP functions