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<?php $regex = "/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/"; $string = "175.207.24.256"; if (preg_match($regex, $string)){ echo 'hello'; } else { echo 'world'; }
Output for git.master, git.master_jit, rfc.property-hooks
world

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