用preg_match解析url - 正则表达式

Question

I've trying to make my own route class - and I've hot problem with parsing valid url's.

This is an example url: http://localhost/app/module/command/i15

And I need every element after slash / to be an additional element in array creating using preg_match in php.

So - for searching of numbers I've got: ([0-9]+) Searching strings that contains letters, signs like - or _ I've got ([^.]+) (here's the problem)

whole regexp looks like this:

(app)\/(module)\/([^.]+)\/i([0-9]+)

i want an array of 5 elements, something like that:

0 => app, 1=> module, 2 => command, 3 => i15

It will be more beauty if preg_match will return only something like that:

0 => app, 1=> module, 2 => command, 3 => 15 (without I as param identifier)

Can anyone quick help me with this ? I stuck 2 days in that, and can't find right solution.

EDIT: I've got some regexp predefined like:

/app/contacts/list => (app)\/(contacts)\/([^.]+)
/app/contacts/edit/i15 => (app)\/(contacts)\/([^.]+)\/i([\d]+)
/app/contacts/view/i15-c2 => (app)\/(contacts)\/([^.]+)\/i([\d]+)-c([\d]+)

And for all of those I prepare different regexp like above. Problem stars when I need to parse something between:

/app/contacts/preview/random-name/i15-c2 

or

/app/contacts/preview/random-name-i15-c2

([^.]+) catches also \ (slash) - and in above first example this slash broke whole regexp :-(

EDIT SECOND TIME :-)

I've got some predefined regexps for some paths. Lets have a look:

$regexp = [
    [0 => '(app)\/([^/]+)'],
    [1 => '(app)\/([^/]+)\/i([0-9]+)']
];

Next i check current url and match the best result - I know what I want, but php doesn't know what user select so:

if I enter url with path:

app/username/i15

System shows me that $regexp[0] is best result - what it is not true, because $regexp[1] are the best.

I hope this explains my problem.

Answer 1

Since you're using groups to capture in your regex, you can use them to create your desired array. Pass a variable to preg_match() to store the groups:

$components = [];
preg_match('#(app)/(module)/([^.]+)/i([0-9]+)#', $uri, $components);

Now the first element of $components is the whole match, and then the groups.

array_shift($components); # discard first element