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Editorial Team
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Asked: 2026-05-20T21:56:48+00:00

I’ve created a simple PHP test page which connects to a MySQL database, selects

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I’ve created a simple PHP test page which connects to a MySQL database, selects one int value, and then frees the result. The page takes 5 seconds or more to load. I’ve seen a lot of posts about this or similar issues but not of the resolutions have worked. Here is the output I’m getting:

mysql_connect took 4.8948628902435 seconds
mysql_select_db 0.00073790550231934 seconds
mysql_query took 0.0013959407806396 seconds
mysql_free_result took 2.0980834960938E-5 seconds

As you can see, the connection takes far too long and everything else is fast.

What I’ve tried

  • Disabled IPv6
  • Used IP instead of FQDN for the MySQL host.
  • Tweaked some config settings.

The Facts

  • All other non-PHP sites respond instantly.
  • Pinging the MySQL server give 1ms latency.
  • Querying the database using MySQL Query Browser gives instant response times.

FYI – I don’t do PHP so it’s okay to treat me like a baby when suggesting fixes.

The Test Script

<?php
    $mtime = microtime();
    $mtime = explode(' ', $mtime);
    $mtime = $mtime[1] + $mtime[0];
    $starttime = $mtime;

    mysql_connect("the_ip||the_hostname", "the_username", "the_password");

    $mtime = microtime();
    $mtime = explode(" ", $mtime);
    $mtime = $mtime[1] + $mtime[0];
    $endtime = $mtime;
    $totaltime = ($endtime - $starttime);
    echo '<h2> mysql_connect took ' .$totaltime. ' seconds</h2>';
?>

Trace route is instantaneous:
By the way, the application in question is MantisBT as well as WordPress.

  1     2 ms    <1 ms    <1 ms  1.2.3.4
  2    <1 ms    <1 ms    <1 ms  MYSQL5 [5.6.7.8]
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1 Answer

  1. Editorial Team

    Another thing to look at is “mysql_connect” which might show you that PHP is having a hard time resolving (finding) the mysql host. Are you using a IP address, localhost, or hostname? (when connecting to the database in php) If it’s a hostname try and add the IP to c:\windows\system32\drivers\etc\host

    if that doesn’t work.
    If all your “The Facts” are correct then you might have a issue with your php script. Can you post it so I can see what you are running? Also post the mysql table info like “Indexes” etc.

    🙂

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