(PECL uopz 5, PECL uopz 6, PECL uopz 7)
uopz_get_hook — Gets previously set hook on function or method
Gets the previously set hook on a function or method.
classThe name of the class.
functionThe name of the function or method.
Returns the previously set hook on a function or method, or null if no hook
has been set.
示例 #1 Basic uopz_get_hook() Usage
<?php
function foo() {
echo 'foo';
}
uopz_set_hook('foo', function () {echo 'bar';});
var_dump(uopz_get_hook('foo'));
?>以上示例的输出类似于：
object(Closure)#2 (0) {
}