PHP User-input Sanitation and Defaults

gistfile1.php

<?

// Usage: search($_GET);

function search($args) {

	$vars = array(
		'order_by' => 'date',
		'order' => 'DESC',
	)

	$where = array(
		'tags',
		'country_tags',
		'text'
	);

	$vars = values($vars, $args);
	$where = values($where, $args);

	// Construct and execute DB query
}


function values($defaults, $values) {
	$array = array();

	if (is_assoc($defaults)) {
		foreach ($defaults as $k => $v) {
			if (isset($values[$k]) && $values[$k] != '') {
				$array[$k] = stripslashes($values[$k]);
			} else {
				if ($defaults[$k] != '') {
					$array[$k] = $defaults[$k];
				}
			}
		}
	} else {
		foreach ($defaults as $v) {
			if (isset($values[$v]) && $values[$v] != '') {
				$array[$v] = stripslashes($values[$v]);
			}
		}		
	}

	return $array;
}



// function is_assoc($array) {
// 	return (bool) count(array_filter(array_keys($array), 'is_string'));
// }

?>