How to remove extension from string (only real extension!)

Question

http://php.net/manual/en/function.pathinfo.php

$filename = pathinfo('filename.md.txt', PATHINFO_FILENAME); // returns 'filename.md'

Try this one:

$withoutExt = preg_replace('/\\.[^.\\s]{3,4}$/', '', $filename);

So, this matches a dot followed by three or four characters which are not a dot or a space. The "3 or 4" rule should probably be relaxed, since there are plenty of file extensions which are shorter or longer.

From the manual, pathinfo:

<?php
    $path_parts = pathinfo('/www/htdocs/index.html');

    echo $path_parts['dirname'], "\n";
    echo $path_parts['basename'], "\n";
    echo $path_parts['extension'], "\n";
    echo $path_parts['filename'], "\n"; // Since PHP 5.2.0
?>

It doesn't have to be a complete path to operate properly. It will just as happily parse file.jpg as /path/to/my/file.jpg.

Use PHP basename()

(PHP 4, PHP 5)

var_dump(basename('test.php', '.php'));

Outputs: string(4) "test"

This is a rather easy solution and will work no matter how long the extension or how many dots or other characters are in the string.

$filename = "abc.def.jpg";

$newFileName = substr($filename, 0 , (strrpos($filename, ".")));

//$newFileName will now be abc.def

Basically this just looks for the last occurrence of . and then uses substring to retrieve all the characters up to that point.

It's similar to one of your googled examples but simpler, faster and easier than regular expressions and the other examples. Well imo anyway. Hope it helps someone.

Recommend use: pathinfo with PATHINFO_FILENAME

$filename = 'abc_123_filename.html';
$without_extension = pathinfo($filename, PATHINFO_FILENAME);