runkit_method_redefine

(PECL runkit >= 0.7.0)

runkit_method_redefine — Dynamically changes the code of the given method

Опис

bool runkit_method_redefine ( string $classname , string $methodname , string $args , string $code [, int $flags = RUNKIT_ACC_PUBLIC ] )

Зауваження: This function cannot be used to manipulate the currently running (or chained) method.

Параметри

classname: The class in which to redefine the method
methodname: The name of the method to redefine
args: Comma-delimited list of arguments for the redefined method
code: The new code to be evaluated when methodname is called
flags: The redefined method can be RUNKIT_ACC_PUBLIC, RUNKIT_ACC_PROTECTED or RUNKIT_ACC_PRIVATE optionally combined via bitwise OR with RUNKIT_ACC_STATIC (since 1.0.1)

Зауваження:
This parameter is only used as of PHP 5, because, prior to this, all methods were public.

Значення, що повертаються

Повертає TRUE в успішному випадку або FALSE в разі помилки.

Приклади

Приклад #1 runkit_method_redefine() example


<?php
class Example {
    function foo() {
        return "foo!\n";
    }
}

// create an Example object
$e = new Example();

// output Example::foo() (before redefine)
echo "Before: " . $e->foo();

// Redefine the 'foo' method
runkit_method_redefine(
    'Example',
    'foo',
    '',
    'return "bar!\n";',
    RUNKIT_ACC_PUBLIC
);

// output Example::foo() (after redefine)
echo "After: " . $e->foo();
?>

Наведений вище приклад виведе:

Before: foo!
After: bar!

Прогляньте Також

runkit_method_add() - Dynamically adds a new method to a given class
runkit_method_copy() - Copies a method from class to another
runkit_method_remove() - Dynamically removes the given method
runkit_method_rename() - Dynamically changes the name of the given method
runkit_function_redefine() - Replace a function definition with a new implementation

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User Contributed Notes 1 note

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lauri dot piisang at cashongo dot co dot uk ¶

11 years ago


A sample implementation of redefining a public static method of symfony's sfDate to 'travel in time' with runkit:
<?php
//Going back in time 3 days
$subtractablePeriod = 3;
runkit_method_redefine('sfDateTimeToolkit', 'now', '', 'return strtotime("-'.$subtractablePeriod.' days");', (RUNKIT_ACC_PUBLIC | RUNKIT_ACC_STATIC));    

//Do Stuff here that would otherwise get the current date

//Return to realtime
runkit_method_redefine('sfDateTimeToolkit', 'now', '', 'return time();', (RUNKIT_ACC_PUBLIC | RUNKIT_ACC_STATIC));
?>

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