Online PHP editor | refs for HaKUn

<?php /** * Parses routes of the following form: * * "/user/{name}/{id:[0-9]+}" */ class Std { const VARIABLE_REGEX = <<<'REGEX' ~\{ \s* ([a-zA-Z][a-zA-Z0-9_]*) \s* (?: : \s* ([^{}]*(?:\{(?-1)\}[^{}]*)*) )? \}~x REGEX; const DEFAULT_DISPATCH_REGEX = '[^/]+'; public function parse($route) { if (!preg_match_all( self::VARIABLE_REGEX, $route, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER )) { return [$route]; } $offset = 0; $routeData = []; foreach ($matches as $set) { if ($set[0][1] > $offset) { $routeData[] = substr($route, $offset, $set[0][1] - $offset); } $routeData[] = [ $set[1][0], isset($set[2]) ? trim($set[2][0]) : self::DEFAULT_DISPATCH_REGEX ]; $offset = $set[0][1] + strlen($set[0][0]); } if ($offset != strlen($route)) { $routeData[] = substr($route, $offset); } return $routeData; } } $Parser = new Std; var_dump( $Parser->parse("/user/{name}/{id:[0-9]+}") );