Printable Regex Flavour Differences Chart
This one-page Letter landscape sheet is for anyone comparing regex syntax across JavaScript, Python, PHP PCRE, and Java. It lists the main columns as Feature, JavaScript, Python, PHP (PCRE), and Java, with rows for lookbehind, named groups, and full match handling. Each row shows the matching form used in each flavour, such as fixed-width lookbehind, named group syntax, and how full matches are written or checked.
Free printable · PDF
- 1 page
- US Letter, landscape — choose “Fit to page” for A4
- PDF, 56 KB
Free for personal, family and classroom use.
Use it as a quick reference while building or editing patterns, or keep it beside your editor when you switch between languages. The layout makes it easy to scan differences at a glance and confirm the syntax before you test a pattern.
Good for
- Compare regex syntax across four languages
- Check named group and lookbehind forms
- Verify full match methods before testing
Tip: Print in landscape and keep it near your keyboard for quick syntax checks.
3 files · PDF, XLSX
Get every sheet: Regex Cheat Sheet Pack
This sheet plus 2 more in one download, with the editable Excel files. Printable regex cheat sheet, a common patterns reference with test cases and a flavour-differences table for JavaScript, Python, PHP and Java.
$3.00 USD, one-time 3 files · about $1.00 each
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