php http build query
$data = [
    'foo' => 'bar',
    'baz' => 'boom',
    'cow' => 'milk',
    'php' => 'hypertext processor'
];
echo http_build_query($data); // output: foo=bar&baz=boom&cow=milk&php=hypertext+processor
echo http_build_query($data, '', '&'); // output: foo=bar&baz=boom&cow=milk&php=hypertext+processor
