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get_defined_functions — Lists defined functions


array get_defined_functions(void)


Array of functions; FALSE on error


Gets a list of all defned functions, both internal (in PHP) and user-defined. The function returns an associative array containing two elements, internal and user. Theinternal element lists all PHP internal functions (which is a very large list); the user element shows all user-defined functions available to the script calling the function.


PHP Version: 4.0.4+


Example 385. List all functions

function test_function() {
    return TRUE;

$funclist = get_defined_functions();

echo "User functions\n";

echo "\n\n";

echo "Internal functions\n";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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