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run code in 200+ php & hhvm versions
Bugs & Features
<?php function extractRouteParameterComponents($routeParameter) { $regexPattern = "/^{(\w+)(?::(.+))?}(\?)?$/"; if (preg_match($regexPattern, $routeParameter, $matches)) { // This group always exists $name = $matches[1]; // If the group was not present, we use [^/] as a default $pattern = empty($matches[2]) ? "[^/]" : $matches[2]; // The parameter is optional if the last capturing group // (which is a plain question mark) was found $optional = isset($matches[3]); return [$name, $pattern, $optional]; } } $routeParameter = "{id:[0-9]+}?"; list($name, $pattern, $optional) = extractRouteParameterComponents($routeParameter); var_dump($name, $pattern, $optional);
based on eVETA
Output for 5.5.0 - 7.3.1
string(2) "id" string(6) "[0-9]+" bool(true)