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uopz_flags

(PECL uopz 2 >= 2.0.2, PECL uopz 5, PECL uopz 6)

uopz_flagsGet or set flags on function or class

说明

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

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

参数

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.

返回值

If setting, returns old flags, else returns flags

错误/异常

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.

更新日志

版本 说明
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.

范例

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));
?>

以上例程会输出:

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());
?>

以上例程会输出:

bool(false)
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User Contributed Notes 1 note

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1
ASchmidt at Anamera dot net
2 years ago
If the method name is set to an empty string, then the flags for the CLASS itself will be affected, instead of an individual method. This can be used to remove the "final" attribute from a class.
<?php
declare(strict_types=1);

final class
MyClass { function mymethod() {} };
uopz_flags(MyClass::class, '', 0);
?>

Note: Although not documented, setting the method to NULL will also target the CLASS flags, however, that syntax will clash with strict types because of the developer's improper function signature.
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