Description:
------------
I get the error "Warning: dl() [function.dl]: Not supported in multithreaded Web servers - use extension=php_gd2.dll in your php.ini in c:\program files\apache group\Apache\htdocs\z.php on line 15" in Apache 1.3.31.

Reproduce code:
---------------
<?php
$ext = 'gd2';
$prefix = (PHP_SHLIB_SUFFIX == 'dll') ? 'php_' : '';
echo '<br />Let\'s see if we can load this extension: ' . $ext;
$dir = "C:\\php\\ext\\";
$fn = $prefix . $ext . ".dll";
echo "<br />First check for file: " . $dir . $fn;
//$handle = fopen($dir . $fn, "r");
$handle = file_exists($dir . $fn);
if ($handle)
 echo "<br />File Exists!";
else
 echo "STUPID!";
if (!extension_loaded($ext)) {
  dl($fn);
  echo '<br />did it ' . 'load it? (' . $fn . ')';
}
else
{
 echo '<br />well, i guess' . ' it is already there';
}
?>

Expected result:
----------------
Let's see if we can load this extension: gd2
First check for file: C:\php\ext\php_gd2.dll
File Exists!
Warning: dl() [function.dl]: Not supported in multithreaded Web servers - use extension=php_gd2.dll in your php.ini in c:\program files\apache group\Apache\htdocs\z.php on line 15

did it load it? (php_gd2.dll)