Question

How to check if a URL exists in PHP

Answer 1

/*
array get_headers ( string $url [, int $format = 0 ] )
*/  
  
$url = "http://www.collectivesolver.com/questions";
$headers = @get_headers($url);
//print_r($headers);
if (strpos($headers[0], "404 Not Found"))
    echo "404 Not Found - URL NOT exists";
else 
    echo "200 OK - URL exists";

/*
run:
  
200 OK - URL exists

*/

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Answer 2

/*
resource curl_init ([ string $url = NULL ] )
*/  
  
function url_exists($url) 
{
    if (!$fp = curl_init($url)) return false;
    
    return true;
}

if (url_exists("http://www.collectivesolver.com"))
    echo "exits<br>";
else
    echo "NOT exist<br>";

/*
run:
  
exits

*/

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