PHP之call_user_func_array用法 

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header('Content-Type:text/html;charset=utf-8');
class call_func{
    function func0() {
        echo 'func0';
    }

    function func1($a) {
        echo $a;
    }

    function func2($a, $b) {
        echo $a+$b;
    }

    function func3($a, $b, $c) {
        echo $a+$b+$c;
    }
}

function otest() {
    $args = func_get_args();    
    $num = func_num_args();
    call_user_func_array(array('call_func','func'.$num), $args);
}

otest(1,1,1);

mixed call_user_func_array ( callback function, array param_arr ) 和 mixed call_user_func ( callback $function [, mixed $parameter [, mixed $… ]] ) 相似