php Programming Glossary: expressions.info

http://stackoverflow.com/questions/10776391/php-allow-only-certain-characters-in-string-without-using-regex

places to read about them than PHP manual. Try regular expressions.info . For your specific question you need character class pattern..

http://stackoverflow.com/questions/20563772/reference-mod-rewrite-url-rewriting-and-pretty-links-explained

as if foo bar.html had been requested. See http regular expressions.info for more information about regular expression matching capturing..

http://stackoverflow.com/questions/2520633/what-is-the-mm-dd-yyyy-regular-expression-and-how-do-i-use-it-in-php

the regular expression for MM DD YYYY at http www.regular expressions.info regexbuddy datemmddyyyy.html but I don't think I am using it..

http://stackoverflow.com/questions/3768648/ereg-replace-to-preg-replace-for-a-particular-regex

sheets regular expressions cheat sheet http www.regular expressions.info reference.html Both of those are in my permanent bookmarks...

http://stackoverflow.com/questions/4494240/validate-email-address-in-php

email share improve this question http www.regular expressions.info email.html has the RFC2822 recommended reg ex. share improve..

http://stackoverflow.com/questions/5059996/php-preg-replace-with-unicode-chars

Unicode character class as explained here http www.regular expressions.info unicode.html#block preg_replace ' ^ w d p L u' str Since this..

http://stackoverflow.com/questions/6407983/utf-8-in-php-regular-expressions

and then there are only letters. See http www.regular expressions.info php.html for php regex details The p L Unicode letter is explained..

http://stackoverflow.com/questions/7891771/php-regex-to-match-outside-of-html-tags

variable length asf foo barr ^ See also http www.regular expressions.info lookaround.html for a nice explanation of that assertion syntax...