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23 years ago
<?php
//script to time DNS propagation
//(Above script modified slightly to show micro time)
//seems pretty damn quick to me.. I'm getting .0055 sec worstcase badhost times.

//A known good dns name (my own)
    $nametotest = "fuzzygroup.com";
    
//Call address test function 
    $time_start = getmicrotime();
    testipaddress($nametotest);
    $time_end = getmicrotime();
    $time = $time_end - $time_start;
    echo "Good Host Search took $time seconds<br><br>";

//A known bad name (trust me)
    $nametotest = "providence.mascot.com";
    $time_start = getmicrotime();
    testipaddress($nametotest);
    $time_end = getmicrotime();
    $time = $time_end - $time_start;
    echo "Bad Host Search took $time seconds<br>";
    
    
function getmicrotime(){ 
    list($usec, $sec) = explode(" ",microtime()); 
    return ((float)$usec + (float)$sec); 
    } 

//ip address checking function
//for real use should have a return value but example code
function testipaddress ($nametotest) {
    $ipaddress = $nametotest;
    $ipaddress = gethostbyname($nametotest);
    if ($ipaddress == $nametotest) {
        echo "No ip address for host<br>";
    }
    else {
        echo "good hostname, $nametotest ipaddress = $ipaddress<br>";
    }
}

//Recommended fix for sql applications: 
// store url to temporary table 
// run second process periodically to 
// check urls and update main table
?>
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