This is an easy one. There seem to be plenty of solutions to determine if a URL contains a specific key or value, but strangely I can't find a solution for determining if URL does or does not have a query at all.
Using PHP, I simply want to check to see if the current URL has a query string. For example: http://abc.com/xyz/?key=value VS. http://abc.com/xyz/.
For any URL as a string:
if (parse_url($url, PHP_URL_QUERY))
If it's for the URL of the current request, simply:
if ($_GET)
if (isset($_SERVER['QUERY_STRING'])) {echo 'has string';} else {echo 'no string';}with no luck. Thanks!
if ($_GET) (for the current request) works because an empty array is false in a boolean if($x) context. See: php.net/manual/en/types.comparisons.php So indeed no need for count() or empty().The easiest way is probably to check to see if the $_GET[] contains anything at all. This can be done with the empty() function as follows:
if(empty($_GET)) {
//No variables are specified in the URL.
//Do stuff accordingly
echo "No variables specified in URL...";
} else {
//Variables are present. Do stuff:
echo "Hey! Here are all the variables in the URL!\n";
print_r($_GET);
}
parse_url seems like the logical choice in most cases. However I can't think of a case where '?' in a URL would not denote the start of a query string so for a (very minor) performance increase you could go with
return strpos($url, '?') !== false;
Over 1,000,000 iterations the average time for strpos was about 1.6 seconds vs 1.8 for parse_url. That being said, unless your application is checking millions of URLs for query strings I'd go for parse_url.
Like this:
if (isset($_SERVER['QUERY_STRING'])) {
}
if (isset($_SERVER['QUERY_STRING'])) { echo 'has string'; } else {echo 'no string';} I get 'has string' for both of the example urls above.
if ($_SERVER['QUERY_STRING'] !== '') { echo 'has string' }You can also use if (!$_GET) if you just want to check if the URL doesn't have any parameters at all.
