php custom extension get function

This article mainly introduces the PHP custom extension acquisition function, and analyzes PHP's interception operation implementation skills for file extensions in the form of examples. Friends in need can refer to it

The details are as follows:

<?php
$url = "http://www.abc.com/abc/de/fg.php?id=1";
//这个是自己写的
function getUrl($url) {
  $date = explode(&#39;?&#39;, $url);
  $date = basename($date[0]);
  $date = explode(&#39;.&#39;, $date);
  return $date[1];
}
var_dump(getUrl($url));
//下面两个是网上弄的
function getExt($url){
  $arr = parse_url($url);
  $file = basename($arr[&#39;path&#39;]);
  $ext = explode(".",$file);
  return $ext[1];
}
var_dump(getExt($url));
function getName($url) {
  $w_param = pathinfo($url);
  $str = $w_param[&#39;extension&#39;];
  list($type, $vars) = explode(&#39;?&#39;,$str);
  return $type;
}
echo &#39;start3&#39;.date("Y-m-d H:i:s");

The above is the entire content of this article, I hope it will be helpful to everyone's study.

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