How Can I Easily Pass Arrays as URL Parameters in PHP?

Passing Arrays as URL Parameters: A Simple Solution

Passing arrays as URL parameters can be a daunting task, but with the right tools, it can be made simple. The issue at hand involves determining the best method to pass an array as a URL parameter. The options presented are cumbersome and messy.

Fortunately, there is a straightforward solution: http_build_query(). This function takes query parameters as an associative array.

Consider the following example:

$data = array(
    1,
    4,
    'a' => 'b',
    'c' => 'd'
);
$query = http_build_query(array('aParam' => $data));

The result will be:

string(63) "aParam%5B0%5D=1&aParam%5B1%5D=4&aParam%5Ba%5D=b&aParam%5Bc%5D=d"

This string is equivalent to:

aParam[0]=1&aParam[1]=4&aParam[a]=b&aParam[c]=d

http_build_query() takes care of the necessary escaping ([ => [ and ] => ]), making URL encoding easy and efficient.

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