How to use PHP Regex Online
- Paste the pattern and test string you need to process into the input box.
- Set Pattern, Flags so the output fits your use case.
- Watch the output update instantly while you adjust the pattern and test string.
- When it looks right, Copy matches to save it.
About this tool
There is no server behind PHP Regex Online. PHP Regex Online tests your regular expression against sample text in your browser, highlighting matches as you type.
Flags and group captures are surfaced so you can refine the pattern quickly. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What does PHP Regex Online do?
PHP Regex Online lets you process your input right in the browser using the Pattern, Flags controls, with the result shown instantly and nothing uploaded.
Does PHP Regex Online cost anything?
No — PHP Regex Online is completely free, with no sign-up and no hidden limits.
Does PHP Regex Online upload my data?
No — PHP Regex Online processes everything locally in your browser, so nothing you enter is uploaded or stored.
Which regex flavor does PHP Regex Online use?
PHP Regex Online runs your pattern with the browser's own JavaScript regex engine, live and on your device.
Does PHP Regex Online work on mobile?
Yes — PHP Regex Online is just a web page and runs on any modern browser, including phones and tablets.