usort() problem

[rayge99]

I dont really get how to do usort properly

whati m wanting to so ias list my array like natcasesort() does EXCEPT id liek special chars to show up first
Example

_test
1thing
another_item

Right now natcasesort forces special chars to the end.

Thanks for any help

[NogDog]

<pre>
<?php
$testData = array(
   'abcd',
   'wxyz',
   'a1b2',
   '_wxyz',
   '#wxyz',
   '_#wxyz',
   '_#abcd',
   '_abcd'
);
function mysort($a, $b)
{
   $aFirst = substr($a, 0, 1);
   $bFirst = substr($b, 0, 1);
   if(ctype_alnum($aFirst) && ctype_alnum($bFirst))
   {
      return(strnatcasecmp($a, $b));
   }
   elseif(!ctype_alnum($aFirst) && ctype_alnum($bFirst))
   {
      return(-1);
   }
   elseif(ctype_alnum($aFirst) && !ctype_alnum($bFirst))
   {
      return(1);
   }
   else
   {
      return(mysort(substr($a,1), substr($b,1)));
   }
}
echo "Before:\n";
print_r($testData);
usort($testData, 'mysort');
echo "After:\n";
print_r($testData);
?>
</pre>