How to alternate between 2 colors using PHP?
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Question: How to alternate between 2 colors using PHP? This could come in handy if you have a table with multiple rows and if you wish to alternate between 2 colors. Answer: We'll need to use the Modulus Arithmetic Operator for this (%). Modulus (%) gets the remainder after a division has been made between 2 numbers. eg. 3%2 = 1 Code Example:
 <table border="0" cellpadding="2" cellspacing="4">
<?php
  $rows = 10; //Number of rows
  for($i=0;$i<$rows;$i++){ //Looping through rows
      $a = $i % 2; //Modulus Calculation
      Â
       if($a == 1){ //If remainder is one we select grey as the color
           $color = "#3e3e3e";
       }else{ //If there's no remainder the color will be white
           $color = "#ffffff";
       }
       ?>
       <tr style="background-color:<?=$color?>"> //Applying the relevant color
           <td>Color 1</td>
       </tr>
       <?php
   }
?>
</table>
Output:
| Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 | | Color 1 |
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