Home >Backend Development >PHP Tutorial >Three functions for obtaining file extension name in PHP_PHP tutorial

Three functions for obtaining file extension name in PHP_PHP tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOriginal
2016-07-21 15:15:55957browse

Choose one and remember it. You can use it directly when you need to use it in the future, or you can come to this site to read this article.

Copy code The code is as follows:

//Method 1:
function extend_1( $file_name)
{
$retval="";
$pt=strrpos($file_name, ".");
if ($pt) $retval=substr($file_name, $pt +1, strlen($file_name) - $pt);
return ($retval);
}

//Method 2
function extend_2($file_name)
{
$extend = pathinfo($file_name);
$extend = strtolower($extend["extension"]);
return $extend;
}

//Method 3
function extend_3($file_name)
{
$extend =explode("." , $file_name);
$va=count($extend)-1;
return $extend[$ va];
}
?>

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/326038.htmlTechArticleChoose one and remember it. You can use it directly when you need to use it in the future, or you can come to this site to view this article. Yes. Copy the code The code is as follows: ?php //Method 1: function extend_1(...
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn