Question

How to check if the host (www.websitename.com) is online (alive) in PHP

Answer 1

function ping($host, $port = 80, $timeout = 5)
{
    $fsock = fsockopen($host, $port, $errno, $errstr, $timeout);
    if ( ! $fsock )
        return FALSE;
    else
        return TRUE;
}
      
$host = 'www.collectivesolver.com';
if( ping($host) )
   echo $host . " - is online<br>";
else
   echo $host . " - is down<br>";
   
/*
run:

www.collectivesolver.com - is online

*/

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Answer 2

function host_online($host)
{
    return (checkdnsrr($host, 'ANY'));
}
     
$host = 'www.collectivesolver.com';
if( host_online($host) ) 
   echo $host . " - is online
";
else 
   echo $host . " - is down
";
   
/*
run:

www.collectivesolver.com - is online

*/

Cleaner teeth, healthier you!
Get The Secret to a Bright and Healthy Smile