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

<?php
function 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