How to Remove File Extensions Accurately in PHP?

Removing File Extensions Accurately

While numerous functions that claim to remove file extensions exist, many fall short as they merely remove a portion of the string containing a period (.). This approach is flawed because it can result in incorrect behavior, as demonstrated in the provided scripts.

To accurately strip an extension, we must consider the possibility of extensions containing 3 or 4 characters. This requires checking the position of the period to determine the appropriate section to remove.

Solution Using pathinfo Function

PHP provides the pathinfo function, which offers a reliable and efficient solution for this task. It returns an array containing various file details, including the filename without the extension:

<code class="php">$filename = pathinfo('filename.md.txt', PATHINFO_FILENAME); // returns 'filename.md'</code>

This approach ensures that the extension is correctly removed, even in cases with multi-character extensions.

The above is the detailed content of How to Remove File Extensions Accurately in PHP?. For more information, please follow other related articles on the PHP Chinese website!