PHP method to get file extension from given url, _PHP tutorial

How php gets the file extension from a given url,

The example in this article describes how php gets the file extension from a given url. Share it with everyone for your reference. The specific implementation method is as follows:

<&#63;php
/**
 * 给定url，获取文件后缀
 * @param string $url
 * @return string
 */
function getUrlPostfix ($url)
{
  $url_arr = explode('.', $url);
  $postfix = $url_arr[count($url_arr) - 1];
  $substr = substr($postfix, 0, 3);
  return $substr;
}
$url = "http://www.bkjia.com/index.html&#63;id=1";
$str = getUrlPostfix($url);
echo $str . "\n";

I hope this article will be helpful to everyone’s PHP programming design.

http://www.bkjia.com/PHPjc/967738.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/967738.htmlTechArticleHow to get the file extension in php from a given url. This example describes how to get the file extension in php from a given url. Name method. Share it with everyone for your reference. The specific implementation method is as follows: p...