php function to check if URL is 404 or nah

url-check.php

<?php
// check if URL exists
	function checkUrl($url) {
	    // Simple check
	    if (!$url) { return FALSE; }

	    // Create cURL resource using the URL string passed in
	    $curl_resource = curl_init($url);

	    // Set cURL option and execute the "query"
	    curl_setopt($curl_resource, CURLOPT_RETURNTRANSFER, true);
	    curl_exec($curl_resource);

	    // Check for the 404 code (page must have a header that correctly display 404 error code according to HTML standards
	    if(curl_getinfo($curl_resource, CURLINFO_HTTP_CODE) == 404) {
	        // Code matches, close resource and return false
	        curl_close($curl_resource);
	        return FALSE;
	    } else {
	        // No matches, close resource and return true
	        curl_close($curl_resource);
	        return TRUE;
	    }

	    // Should never happen, but if something goofy got here, return false value
	    return FALSE;
	}

	// checking 
	if (checkUrl($country_url) == false) {
		echo "404 not found";
		echo $search;
	} else {
		echo "200 OK";
		echo $country_url;
	}
?>

Not working!