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uopz_restore	uopz_set_mock

Uopz Functions	Last updated: Mon, 26 Oct 2026

uopz_set_hook

(PECL uopz 5, PECL uopz 6, PECL uopz 7)

uopz_set_hook — Sets hook to execute when entering a function or method

Description

function uopz_set_hook(string $function, Closure $hook): bool

function uopz_set_hook(string $class, string $function, Closure $hook): bool

Sets a hook to execute when entering a function or method.

Parameters

class: The name of the class.
function: The name of the function or method.
hook: A closure to execute when entering the function or method.

Return Values

Returns true on success or false on failure.

Examples

Example #1 Basic uopz_set_hook() Usage

<?php
function foo() {
    echo 'foo';
}
uopz_set_hook('foo', function () {echo 'bar';});
foo();
?>

The above example will output:

barfoo

See Also

uopz_get_hook() - Gets previously set hook on function or method
uopz_unset_hook() - Removes previously set hook on function or method

uopz_restore	uopz_set_mock

Uopz Functions	Last updated: Mon, 26 Oct 2026