If you really want to be optimal, use bitwise instead of modulus :) And ++$i instead of $i++ :) And, use single not double quotes :) Silly, but true.
http://www.faqts.com/knowledge_base/view.phtml/aid/783/fid/9 And, write less code, so: $bgcolor = (++$i & 1) ? '#ffffff' : '#eeeeee'; Regards, Philip On Sat, 5 Apr 2003, Daevid Vincent wrote: > I had to know... ;-) > > Output: > > version one: 0.56761503219604 seconds > version two: 0.3099730014801 seconds > version three: 0.36320495605469 secondss > > So the boolean (V2)is faster: > > Mine is slightly slower by a 'smidge' (0.06 seconds) > > Top one is cleanest but slower. > > --- test --- > > <?php > function getmicrotime(){ > list($usec, $sec) = explode(" ",microtime()); > return ((float)$usec + (float)$sec); > } > > $ITERATIONS = 100000; > > $time_start = getmicrotime(); > for ($i = 1; $i < $ITERATIONS; $i++) > { > $bgcolor = ($bgcolor == '#E3E8F0') ? '#C7D0E2' : '#E3E8F0'; > } > $time_end = getmicrotime(); > $time1 = $time_end - $time_start; > echo "version one: \t$time1 seconds<P>\n"; > > $time_start = getmicrotime(); > $tf = TRUE; > for ($i = 1; $i < $ITERATIONS; $i++) > { > $tf=!$tf; > ($tf) ? "'C7D0E2" : "E3E8F0"; > } > $time_end = getmicrotime(); > $time2 = $time_end - $time_start; > echo "version two: \t$time2 seconds<P>\n"; > > $time_start = getmicrotime(); > $r = 0; > for ($i = 1; $i < $ITERATIONS; $i++) > { > (($r++ % 2 == 0) ? "'C7D0E2" : "E3E8F0"); > } > $time_end = getmicrotime(); > $time3 = $time_end - $time_start; > echo "version three: \t$time3 seconds<P>\n"; > ?> > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
