do this 
for($i=1; $i<=$a; $i++){
       $randomelement = int(rand @thumbs);
       print "<img src=\"$picture_directory/$thumbs[$randomelement]\">
+$picture_directory/$thumbs[$randomelement]<br>";
       splice(@thumbs, $randomelement,1);
}

[download]
you need the int() since rand returns a decimal, and you were trying to splice out the value of the array index, not the actual index number...
                - Ant

In reply to Re: remove a random variable from an array by suaveant
in thread remove a random variable from an array by Anonymous Monk

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