php如何停止脚本运行

//exit;   //直接停止，不需要输出任何提示信息
//exit('stop here') ;  //带括号表示在此处终止，但是要输出提示信息
//die和exit是一样的//die;
die('stop here') ;

<?php
//包含demo13_ stop. php
$test = include &#39; demo13_ stop.php&#39; ;
var_ dump($test) ;
demo13_stop.php
<?php
   //终止脚本执行
   echo &#39;start&#39;;
   //return
   return &#39;*&#39;;

<?php
    //项目配置文件
    return array(
           &#39;host&#39; =>&#39;localhost&#39;,
           &#39;port&#39; =>&#39;3306&#39;,
           &#39;user&#39; =>&#39;root&#39;,
           &#39;pass&#39; => &#39;root&#39;
    );