如何将搜索网址拆分为关联数组

Question

So I would like to take a string like this,

q=Sugar Beet&qf=vegetables&range=time:[34-40]

and break it up into separate pieces that can be put into an associative array and sent to a Solr Server.

I want it to look like this

['q'] => ['Sugar Beets], ['qf'] => ['vegetables']

After using urlencode I get

q%3DSugar+Beet%26qf%3Dvegetables%26range%3Dtime%3A%5B34-40%5D

Now I was thinking I would make two separate arrays that would use preg_split() and take the information between the & and the = sign or the = and the & sign, but this leaves the problem of the final and first because they do not start with an & or end in an &.

After this, the plan was to take the two array and combine them with array_combine().

So, how could I do a preg_split that addresses the problem of the first and final entry of the string? Is this way of doing it going to be too demanding on the server? Thank you for any help.

PS: I am using Drupal ApacheSolr to do this, which is why I need to split these up. They need to be sent to an object that is going to build q and qf differently for instance.

Answer 1

You don't need a regular expression to parse query strings. PHP already has a built-in function that does exactly this. Use parse_str():

$str = 'q=Sugar Beet&qf=vegetables&range=time:[34-40]';
parse_str($str, $params);
print_r($params);

Produces the output:

Array
(
    [q] => Sugar Beet
    [qf] => vegetables
    [range] => time:[34-40]
)