Regex Editor & Tester

Matches the literal string 'php' in a case-insensitive manner (php, PHP, Php, etc.). With the anchored (A) and multiline (m) modifiers, the match must occur at the start of the subject string or at the beginning of a line. Typically used to detect or extract references to the PHP programming language in source code, logs, configuration files, or general text for filtering and classification purposes.