Old related problems of interlaced color change

The old problem of interlaced color change?
Want to achieve on the Web page to display interlaced color change function, I use the following second method, theoretically yes, the result is a color, later checked, there is the first method, very useful. just want to know the second method there is a problem, very confused, before all the line, check a lot of information, no detailed, seek expert guidance ...

PHP Code

  
         Method one while      ($result =mysql_fetch_array ($query)) {    $bgcolor = ($bgcolor = = "Blue")? "White": "Blue";    echo "";    echo "{$result [' Gname ']}";    echo "{$result [' Endtime ']}";    echo "{$result [' Current_price ']}";    echo "{$result [' Reply_num ']}";    echo "";      }      Method two       $flag =1;      while ($result =mysql_fetch_array ($query)) {    if ($flag% 2 = = 0) $bgcolor = "Yellow", Else $bgbolor = "white"; This way can theoretically    echo "";    echo "{$result [' Gname ']}";    echo "{$result [' Endtime ']}";    echo "{$result [' Current_price ']}";    echo "{$result [' Reply_num ']}";    echo "";    $flag + +;      }

------Solution--------------------
For Mao without jquery at the front end do?? The problem is the efficiency of code fetching
------Solution--------------------
if ($flag% 2 = = 0) $bgcolor = "Yellow"; else $bgbolor = "white";

$bgcolor!!!

I wrote it wrong, who is the blame?
------Solution--------------------
Landlord first output $flag% 2
echo $flag% 2;echo '
';
See if the format is x0x0x0x0x0. If yes. Looking for CSS style issues
style= "Background: Color"
------Solution--------------------
discuss
if ($flag% 2 = = 0) $bgcolor = "Yellow"; else $bgbolor = "white";

$bgcolor!!!

I wrote it wrong, who is the blame?

