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";
?>
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