Friday, March 15, 2013

PHP, input verification

In this PHP example, we allow input as ubc, vch, others. The input is not case sensitive and allow users some typo, such as add . between letters such as u.b.c., also type others as other.
//First remove all . and convert to lower case, using PHP function trim to ignore white spaces.
$site=strtolower(str_replace(".", "",trim($_POST['site'])));
//Create an array containing strings allowed
 $site_allow = array("ubc","vch","others","other");
//Using PHP function in_array to check string $site match any element of the array
     $record['error'][] = 'Invalid site category';

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