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<?php function tryGetPhoneNumber($input, &$phoneNumber) { if (preg_match('/(?<phoneNumber>\d{3}-\d{3}-\d{4})/', $input, $match)) { $phoneNumber = $match['phoneNumber']; return true; } $phoneNumber = null; return false; } $phoneNumber = null; if (tryGetPhoneNumber("I'm going to call 555-123-4567 tomorrow.", $phoneNumber)) { var_dump($phoneNumber); } else { echo 'No phone number.'; } $phoneNumber = null; if (tryGetPhoneNumber("Shut up and take my money!", $phoneNumber)) { var_dump($phoneNumber); } else { echo 'No phone number.'; }
Output for git.master, git.master_jit, rfc.property-hooks
string(12) "555-123-4567" No phone number.

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