is_callable

Dostupnost ve verzích: PHP 4.0.6

Verify that the contents of a variable can be called as a function

Parametry

Parametr Datový typ Výchozí hodnota Poznámka
$name `callback callable`   Can be either the name of a function stored in a string variable, or an object and the name of a method within the object, like this: array($SomeObject, ‚MethodName‘)
$syntax_only bool null, If set to true the function only verifies that name might be a function or method. It will only reject simple variables that are not strings, or an array that does not have a valid structure to be used as a callback. The valid ones are supposed to have only 2 entries, the first of which is an object or a string, and the second a string.  
$callable_name string null Receives the „callable name“. In the example below it is „someClass::so­meMethod“. Note, however, that despite the implication that someClass::So­meMethod() is a callable static method, this is not the case.  

Návratové hodnoty

bool

true if name is callable, false otherwise.

Další zdroje

http://php.net/…callable.php

Sponzorované odkazy
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