Usage demonstration of call_user_func_array() function in PHP_PHP tutorial

call_user_func_array
(PHP 4 >= 4.0.4, PHP 5)

call_user_func_array -- Call a user function given with an array of parameters
Description
mixed call_user_func_array ( callback function, array param_arr )

Call a user defined function given by function, with the parameters in param_arr. For example:

例子 1. call_user_func_array() example

复制代码 代码如下:

function debug($var, $val)
{
echo "***DEBUGGINGnVARIABLE: $varnVALUE:";
if (is_array($val) || is_object($val) || is_resource($val)) {
print_r($val);
} else {
echo "n$valn";
}
echo "***n";
}

$c = mysql_connect();
$host = $_SERVER["SERVER_NAME"];

call_user_func_array('debug', array("host", $host));
call_user_func_array('debug', array("c", $c));
call_user_func_array('debug', array("_POST", $_POST));
?>

复制代码 代码如下:

function test($str) {
echo $str;
}

call_user_func_array("test","NO.1 www.chhua.com");//输出"NO.1 www.chhua.com"
//参数说明“第一个参数是函数名，第二个是参数
class testClass {
public function write($str){
echo $str;
}
}
call_user_func_array(array(testClass,write),"NO.1 www.chhua.com");//用类调用的时侯，用array()，array(类名，方法名)
?>

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