Libraries tagged by expression

✖️➕➖➗ `math_eval` safely evaluates mathematical expressions

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Validates popular debit and credit cards numbers against regular expressions and Luhn algorithm. Also validates the CVC and the expiration date

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Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with different data types like numbers, big numbers, complex numbers, fractions, units, and matrices.

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Symfony bundle that integrates dragonmantank/cron-expression

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A wrapper that allows you to validate regular expressions and handle normally uncatchable PCRE compilation warnings

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YUI Compressor is an open source tool that supports the compression of both JavaScript and CSS files. The JavaScript compression removes comments and white-spaces as well as obfuscates local variables using the smallest possible variable name. CSS compression is done using a regular-expression-based CSS minifier.

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Optimization of the final page: reformatting the (x)HTML output & removal of new-lines, comments and generator-info including search and replace strings using your regular expressions. In addition combines all SVG selected within content-elements into one file and replaces by .

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A simple language written in PHP that evaluates expressions without eval

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Convert Regular Expressions into text, for testing

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A validator for crontab expressions.

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PEG (parsing expression grammar) compiler for PHP

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Validates popular debit and credit cards' numbers against regular expressions and Luhn algorithm. Also validates the CVC and the expiration date.

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Lambda expressions for Twig and filters that make use of them

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An extensible mathematical expression parser and evaluator.

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Human-readable cron expressions

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