1.call_user_func_array
mixed call_user_func_array(callable $callback, array $param_arr)
调用callback函数并把数组param_arr中的元素作为参数传给callback函数。
参数说明:
callback---被调用的函数
param_arr---数组,包含的元素将作为参数传给callback.
返回值:返回callback函数的返回值,如果出错返回FALSE.
例一:
function foobar($arg, $arg2) { echo __FUNCTION__, " got $arg and $arg2\n"; } class foo { function bar($arg, $arg2) { echo __METHOD__, " got $arg and $arg2\n"; } } // Call the foobar() function with 2 arguments call_user_func_array("foobar", array("one", "two")); // Call the $foo->bar() method with 2 arguments $foo = new foo; call_user_func_array(array($foo, "bar"), array("three", "four"));
输出:
foobar got one and two foo::bar got three and four
例二:
namespace Foobar; class Foo { static public function test($name) { print "Hello {$name}!\n"; } } // As of PHP 5.3.0 call_user_func_array(__NAMESPACE__ .'\Foo::test', array('Hannes')); // As of PHP 5.3.0 call_user_func_array(array(__NAMESPACE__ .'\Foo', 'test'), array('Philip'));
输出:
Hello Hannes! Hello Philip!