I am working on a simple front controller, mainly for learning purposes.
I like the way Symfony does routing, having patterns in your map like this: /news/{category}/{id}
and passing category and id variables to the controller. But my problem is -because of my incompetence of using RegEx - I don't know, how to match the patterns to the URI.
How should I match
/news/{category}/{id}
to
/news/tech/5784
Should I allow patterns like this: /news/*
- where *
matches everything? Or where the variables are mixed with some trash, like this /news/{category}_ex/14{id}
?
Getting the variables and values are not much of the problem, but writing a regular expression for matching is.
Thank you for your help in advance
The simplest would be to use (regex) named sub-patterns .
$regex = '#^/news/(?P<category>[a-z0-9]+)/(?P<id>[0-9]+)$#';
$path = '/news/tech/5784';
if (preg_match($regex, $path, $matches))
{
$matches['category'] === 'tech';
$matches['id'] === '5784';
}
You're most likely looking for PHP Subpatterns
$str = '/news/tech/5784';
if (preg_match('~^/news/(?<category>[^/]+)/(?<id>[^/]+)~', $str, $match))
echo $match['category'] . " - " . $match['id'] . "\n";
tech - 5784
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