PHP自写字符处理函数输不出值?

Question

我解决了,希望我们努力,打造PHP无极限.

Answer 1

<?php
  function str_access_feifa($access_insstr)
   {
     if ($access_insstr==null)
{  $access_insstr="";  
   return "false";
}
 else
    {  $access_insstr=str_replace(">", "&gt;",$access_insstr);
           $access_insstr=str_replace("<", "&lt;",$access_insstr);
   $access_insstr=str_replace("' or '", "",$access_insstr);
   $access_insstr=str_replace(" ", "",$access_insstr);
   $access_insstr=str_replace("filemovie", "",$access_insstr);
   $access_insstr=str_replace("fileadd", "",$access_insstr);
   $access_insstr=str_replace("delete", "",$access_insstr);
   $access_insstr=str_replace("update", "",$access_insstr);
   $access_insstr=str_replace("select", "",$access_insstr);
   $access_insstr=str_replace("movie", "",$access_insstr);
   $access_insstr=str_replace("del", "",$access_insstr);
   $access_insstr=str_replace("upd", "",$access_insstr);
   $access_insstr=str_replace('"', '',$access_insstr);
   $access_insstr=str_replace("'", "’",$access_insstr);
   $access_insstr=str_replace("add", "",$access_insstr);
   return $access_insstr;
}
   }
//另个我再处理这个字符
   $int_str="delupdate_up_on";
   $int_str=str_access_feifa($int_str);
   echo "<br>$int_str";
   //问题就是我为什么输不出这个值来呀
   
?>

Answer 2

靠……我以为什么大问题呢，代码那么长，少了return
low level