PHP Diff Checker
Paste two versions of PHP code to compare additions, removals and edited lines with PHP syntax highlighting. The diff runs locally in your browser.
Texte original
Texte modifié
PHP syntax locked
This page automatically highlights PHP tokens, so you do not need to pick a language before comparing files.
Private local compare
The diff runs in your browser. Source code, API payloads and configuration files are not uploaded to a server.
Split or unified review
Use split view for side-by-side review, unified view for compact patches, and hide unchanged lines for large files.
Compare PHP files online
This PHP diff checker is built for developers who need a fast, private way to compare code and configuration changes. Paste two versions, run the comparison, and review additions, removals and inline edits with PHP syntax highlighting already enabled.
Paste or upload the original PHP file on the left.
Paste or upload the changed PHP file on the right.
Compare the result in split or unified view, then hide unchanged lines when you only need the edited regions.
Private browser-based PHP comparison
The diff runs locally in your browser, which keeps source code, API responses, secrets and configuration files on your device. One recent session may be stored in your browser storage for restore, and you can clear it from the tool at any time.
Common PHP diff workflows
Review framework upgrades and configuration changes.
Check function, namespace and array changes.
PHP syntax highlighting
Highlighting is locked to PHP on this page, so the language selector stays out of the way. The parser focuses on tokens such as namespaces, classes, functions, arrays while the diff engine highlights the actual text changes.
.php, .phtml
Reference: PHP manual
PHP diff checker FAQ
What is a PHP diff checker?
A PHP diff checker compares two versions of PHP content and highlights added, removed and edited lines. This page locks syntax highlighting to PHP, so language tokens are easier to scan while reviewing changes.
Does this PHP diff tool upload my code?
No. The comparison runs in your browser. Your PHP files are not uploaded to a server when you click Compare.
Which PHP file types can I compare?
You can paste or upload plain-text files such as .php, .phtml. Any text file can be compared, but this page highlights PHP syntax automatically.
Can I compare large PHP files?
Yes. Large comparisons run in a background worker so the browser stays responsive. Very large files may still take a few seconds on your device.