How to change the suffix in php

How to change the suffix in php: first define a foreachDir method; then open and read the relevant directory; then recursively modify the folder files in the folder; finally obtain the suffix format and modify the suffix name.

#Due to project requirements, I need to change the asp suffix to php, because I am too lazy to change it one by one. I also feel that php, like Qt, is a high-level language. Generally, high-level languages ​​provide functions for adding, deleting, modifying and checking the obtained content. After some information search and code testing, I summarized the method of modifying the specified file suffix in PHP and shared it with everyone.

Goal: Change the asp suffix in the current directory to php without affecting other "files in suffix format", and only for the "current folder", files in the folders contained in the current folder No modifications are made.

The specific function codes are as follows:

<?php 
function foreachDir($dirname)
{ 
if(!is_dir($dirname))
{
  echo "{$dirname} not effective dir";
  exit();
}
 $handle=opendir($dirname); //打开目录
 
while (($file = readdir($handle))!==false) //读取目录
{ 
 if($file!="." && $file!=&#39;..&#39;)
 { 
  if(is_dir($dirname.$file))
 { 
  echo $dirname.$file."<br/>"; 
  //foreachDir($dirname.$file); //如果注释号去掉，将会递归修改文件夹内的文件夹文件
 }
  else
 { 
  echo "--".$dirname."/".$file."<br/>"; 
  $temp = substr($file, strrpos($file, &#39;.&#39;)+1); //获取后缀格式
   if ($temp == "asp") 
   {
  $pos = strripos($file,&#39;.&#39;); //获取到文件名的位置
  $filename = substr($file,0,$pos); //获取文件名
  rename($dirname.&#39;/&#39;.$file,$dirname.&#39;/&#39;.$filename.&#39;.php&#39;); //替换为php后缀格式。
   }
 } 
 } 
 } 
} 
foreachDir(&#39;../traverseMendFilename&#39;);
?>

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