Php/docs/function.runkit7-function-redefine

• PHP Manual
• runkit7 Functions
• Replace a function definition with a new implementation

runkit7_function_redefine

(PECL runkit7 >= Unknown)

runkit7_function_redefine — Replace a function definition with a new implementation

Description

runkit7_function_redefine ( string $funcname , string $arglist , string $code [, bool $return_by_reference = NULL [, string $doc_comment = NULL [, string $return_type [, string $is_strict ]]]] ) : bool

runkit7_function_redefine ( string $funcname , Closure $closure [, string $doc_comment = NULL [, string $return_type [, string $is_strict ]]] ) : bool

Note:

By default, only

userspace functions may be removed, renamed, or modified. In order to override internal functions, you must enable the runkit.internal_override setting in php.ini.

Parameters

funcname

Name of function to redefine

arglist

New list of arguments to be accepted by function

code

New code implementation

closure

A closure that defines the function.

return_by_reference

Whether the function should return by reference.

doc_comment

The doc comment of the function.

return_type

The return type of the function.

is_strict

Whether the function behaves as if it was declared in a file with strict_types=1

Return Values

Returns TRUE on success or FALSE on failure.

Examples

Example #1 A runkit7_function_redefine() example

<?phpfunction testme() {  echo "Original Testme Implementation\n";}testme();runkit7_function_redefine('testme',,'echo "New Testme Implementation\n";');testme();?>

The above example will output:

Original Testme Implementation
New Testme Implementation

See Also

• runkit7_function_add() - Add a new function, similar to create_function
• runkit7_function_copy() - Copy a function to a new function name
• runkit7_function_rename() - Change a function's name
• runkit7_function_remove() - Remove a function definition
• runkit7_method_redefine() - Dynamically changes the code of the given method