PCRE regex syntax - Manual

PHP Regexp Expressions Support. preg_match($pattern, $subject, [, array &$matches]) //取得第一個相同的，並返回0or1, 若有第三個參數會將結果返回給 ...

有時候我們會需要過濾一些字串、或是驗證資料的情況，就可以使用php 的正則表達式來幫助檢查，進而達到想要取得或是想要濾掉的文字部分，以下簡單 ...

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

I want to use php preg_match to confirm that a string ONLY contains upper/lower case letters, numbers, spaces, and punctuation like... comma, period, plus sign, ...

Regular expressions commonly known as a regex (regexes) are a sequence of characters describing a special search pattern in the form of text ...

The main purpose of regular expressions, also called regex or regexp, is to efficiently search for patterns in a given text.

preg_match() returns 1 if the pattern matches given subject, 0 if it does not, or false on failure. Preg_match · Preg_grep · Preg_filter · Preg_quote

As a rule of thumb, it's better to describe your regular expression patterns using single-quoted strings. Using double-quoted strings, the interaction ...

Test PHP regular expressions live in your browser and generate sample code for preg_match, preg_match_all, preg_replace, preg_grep, and preg_split!

A regular expression is a sequence of characters that forms a search pattern. When you search for data in a text, you can use this search pattern to describe ...