Paste two versions of PHP code, or drop .php files, to see every change highlighted. Use it to compare two versions of a template or class, or check what a plugin update changed. Diffspot highlights PHP syntax, marks changed words inside each line and recognizes moved blocks. Press Try an example to see it on a real PHP change.
How to compare PHP files
- Paste or drop the original PHP code on the left.
- Paste or drop the changed version on the right. The diff updates as you type.
- Jump between changes with F7 and Shift+F7, or switch to Unified view to read it like a pull request.
- Copy or export a unified diff, a .patch file or an HTML report.
PHP comparison tips
- Comparing PHPMixed PHP and HTML files are highlighted as PHP. Switch the language to HTML in the Syntax menu if the file is mostly markup.
- Cut the noiseComparing composer.json? The JSON diff ignores key order.
- Your code stays privateThe comparison runs on your device in WebAssembly. Proprietary code is never uploaded or stored.
- Fast on large filesFiles with hundreds of thousands of lines compare in about a second.
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Frequently asked questions
Is PHP detected automatically?
Yes. Diffspot recognizes PHP from the file name (.php) or from the code itself. You can also choose it in the Syntax menu.
Is my code uploaded?
No. The page loads the diff engine once; after that your code stays in the browser tab. How Diffspot works explains how you can check this yourself.
Can I get a patch file?
Yes. Export → Download .patch creates a standard unified diff that git apply or patch can apply.