note 70424 added to language.operators.arithmetic

A very simple yet maybe not obvious use of the modulus (%) operator is to check if an integer is odd or even. <?php if (($a % 2) == 1) { echo "$a is odd." ;} if (($a % 2) == 0) { echo "$a is even." ;} ?> This is nice when you want to make alternating-color rows on a table, or divs. <?php for ($i = 1; $i <= 10; $i++) { if(($i % 2) == 1) //odd {echo "<div class=\"dark\">$i</div>";} else //even {echo "<div class=\"light\">$i</div>";} } ?> ---- Server IP: 64.71.164.2 Probable Submitter: 64.93.132.54 ---- Manual Page -- http://www.php.net/manual/en/language.operators.arithmetic.php Edit -- https://master.php.net/note/edit/70424 Del: integrated -- https://master.php.net/note/delete/70424/integrated Del: useless -- https://master.php.net/note/delete/70424/useless Del: bad code -- https://master.php.net/note/delete/70424/bad+code Del: spam -- https://master.php.net/note/delete/70424/spam Del: non-english -- https://master.php.net/note/delete/70424/non-english Del: in docs -- https://master.php.net/note/delete/70424/in+docs Del: other reasons-- https://master.php.net/note/delete/70424 Reject -- https://master.php.net/note/reject/70424 Search -- https://master.php.net/manage/user-notes.php