(PHP 5 >= 5.4.0, PHP 7)
ReflectionParameter::isCallable — Returns whether parameter MUST be callable
This function has been DEPRECATED as of PHP 8.0.0. Relying on this function is highly discouraged.
This function is currently not documented; only its argument list is available.
This function has no parameters.
Returns true
if the parameter is callable, false
if it is
not or null
on failure.