PHP Manual: Get or set flags on function or class

Description

int uopz_flags(string $function, int $flags = PHP_INT_MAX)

int uopz_flags(string $class, string $function, int $flags = PHP_INT_MAX)

Get or set the flags on a class or function entry at runtime

Parameters

class: The name of a class
function: The name of the function. If class is given and an empty string is passed as function, uopz_flags gets or sets the flags of the class entry.
flags: A valid set of ZEND_ACC_ flags. If omitted, uopz_flags acts as getter.

Return Values

If setting, returns old flags, else returns flags

Errors/Exceptions

As of PHP 7.4.0, if the parameter flags is passed, uopz_flags throws a RuntimeException, if OPcache is enabled, and the class entry of class or the function entry of function is immutable.

Changelog

Version	Description
PECL uopz 5.0.0	The `flags` parameter is now optional. Formerly, `ZEND_ACC_FETCH` had to be passed to use uopz_flags as getter.

Examples

Example #1 uopz_flags example

<?php
class Test {
    public function method() {
        return __CLASS__;
    }
}

$flags = uopz_flags("Test", "method");

var_dump((bool) (uopz_flags("Test", "method") & ZEND_ACC_PRIVATE));
var_dump((bool) (uopz_flags("Test", "method") & ZEND_ACC_STATIC));

var_dump(uopz_flags("Test", "method", $flags|ZEND_ACC_STATIC|ZEND_ACC_PRIVATE));

var_dump((bool) (uopz_flags("Test", "method") & ZEND_ACC_PRIVATE));
var_dump((bool) (uopz_flags("Test", "method") & ZEND_ACC_STATIC));
?>

The above example will output:

bool(false)
bool(false)
int(1234567890)
bool(true)
bool(true)

Example #2 "Unfinalize" a Class

<?php
final class MyClass
{
}

$flags = uopz_flags(MyClass::class, '');
uopz_flags(MyClass::class, '', $flags & ~ZEND_ACC_FINAL);
var_dump((new ReflectionClass(MyClass::class))->isFinal());
?>

The above example will output:

bool(false)