note 31066 added to language.expressions

In case you want to check whether an INT is even or uneven, you could use the % operator. In the example below it has been put into an if-statement. <?php //Sets the variable a $a=2; //Start checking if (($a%2)==0) { print "This is an even number"; //TRUE } else { print "This is an uneven number"; //FALSE } ?> How does it work? $a%2: constantly substract 2 from int a. if put in an if-statement like above, it keeps on substracting 2 from int a, until value is exactly 0 or lower than 2 and higher than 0. Another example. <?php $a=9; $b=8; $c=7; $outcome_A = $a % 3; $outcome_B = $b % 3; $outcome_C = $c % 3; print $outcome_A; // result: 0 print $outcome_B; // result: 2 print $outcome_C; // result: 1 ?> I find this function useful for webdesign purposes. For instance to colour the background of every even entry of database output. -- http://www.php.net/manual/en/language.expressions.php http://master.php.net/manage/user-notes.php?action=edit+31066 http://master.php.net/manage/user-notes.php?action=delete+31066 http://master.php.net/manage/user-notes.php?action=reject+31066