The get_defined_functions() function is an inbuilt function in PHP which returns the all defined functions in the array format.
Syntax:
array get_defined_functions( bool $exclude_disabled = true )
Parameters: This function accepts one parameter that is described below:
- $exclude_disabled: It will check whether the disabled functions will be excluded from the return value i.e. if the function is false, it returns a value otherwise it will return the full definition of the function.
Return value: The return value will be a multidimensional array that has the list of all defined functions(ie., both built-in and user-defined). This function returns a definition of the function or returns the value of the function if the parameter will be true.
Example 1: In this example, we demonstrated the get_defined_functions() function.
PHP
<?php function hello_world(){ echo "neveropen"; } $arr = get_defined_functions(); print_r($arr); ?> |
Output:
Array
(
[internal] => Array
(
[0] => zend_version
[1] => func_num_args
[2] => func_get_arg
[3] => func_get_args
[4] => strlen
[5] => strcmp
[6] => strncmp
[7] => strcasecmp
[8] => strncasecmp
[9] => error_reporting
[10] => define
[11] => defined
} [user] => Array
(
[0] => hello_world
) )
Example 2: In this example, we will print only user-defined functions in an array form.
PHP
<?php function hello_world(){ echo "neveropen"; } function bye_gfg(){ echo "Bye neveropen" ; } $arr = get_defined_functions(); print_r($arr["user"]); ?> |
Output:
Array
(
[0] => hello_world
[1] => bye_gfg
)
Reference: https://www.php.net/manual/en/function.get-defined-functions.php
