build_params_test.php

<?php

function _buildParams(array $data = array(), $preffix = '')
{
    $query = array();
    
    foreach ($data as $k=>$v){
        if (is_array($v)){
            $query[] = _buildParams($v, $preffix ? $preffix .'[' . (is_int($k) ? '' : $k) . ']' : $k);
        } else if ($preffix) {
            $query[] = urlencode($preffix . '['. (is_int($k) ? '' : $k) .']') . '=' . urlencode($v);
        } else {
            $query[] = urlencode($k) . '=' . urlencode($v);
        }
    }
    return implode('&', $query);
}

class BuildParamsTest extends PHPUnit_Framework_TestCase
{
    public function testPushAndPop()
    {
        $output = _buildParams(array('param' => array(1,2,3, array(4,5)), 'lala' => '1', 'lele' => array('lolo' => '2')));

        $expected = str_replace('[', '%5B', str_replace(']', '%5D', 'param[]=1&param[]=2&param[]=3&param[][]=4&param[][]=5&lala=1&lele[lolo]=2'));

        $this->assertEquals($expected, $output);
    }
}