Online PHP editor | rfc for pYdg9

@ 2014-05-05T09:16:25Z

<?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]+}/franchise") );

Output for git.master, git.master_jit, rfc.property-hooks: array(5) { [0]=> string(6) "/user/" [1]=> array(2) { [0]=> string(4) "name" [1]=> string(5) "[^/]+" } [2]=> string(1) "/" [3]=> array(2) { [0]=> string(2) "id" [1]=> string(6) "[0-9]+" } [4]=> string(10) "/franchise" }

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2020-03-21 RFC: Is_Literal - declined
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2015-02-18 Scalar type hints v5 - included in PHP 7
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