waubain Posted May 16, 2011 Share Posted May 16, 2011 I am building a hospital chart simulation for my pharmacy students and I am trying to learn PHP. Today is form validation. The following form has only one input. I have tried to piece together examples I find and from readings. The function works if the student leaves the input null, but does not catch any other errors and passes them to the next form as typed. The Patient ID is a 6 digit numeric between 100000 and 999999 and the 'patientid' will eventually be placed in a MySQL query to see if a patient with that number exists, but one question at a time. Thanks for any help. <?php session_start(); if (isset($_POST['submit'])) { $patient_id = check_input($_POST['patient_num'], "Enter Patient ID"); $_SESSION['patientid'] = $patient_id; header('Location: pt_found.php'); exit(); } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Patient Call Form</title> <link rel="stylesheet" type="text/css" href="main.css" /> </head> <body> <form name="patientfindform" action="#" method="post"> <div> <label>Patient ID:</label> <input type="text" name="patient_num" /><br /> </div> <div> <label> </label> <input type="submit" name="submit" value="Find Patient" /><br /> </div> </form> <script> type="text/javascript"> document.patientfindform.patient_num.focus(); </script> </div> </body> </html> <?php function check_input ($data, $problem='') { $data = trim($data); $data = stripslashes($data); $data = htmlspecialchars($data); if ($problem && strlen($data)== 0) { die($problem); } return $data; } ?> Link to comment https://forums.phpfreaks.com/topic/236592-form-validation-problem/ Share on other sites More sharing options...
waubain Posted May 16, 2011 Author Share Posted May 16, 2011 There is nearly an identical posting of this same problem about 3 or 4 messages back. I will mark this solved. Sorry for the double posting. Link to comment https://forums.phpfreaks.com/topic/236592-form-validation-problem/#findComment-1216284 Share on other sites More sharing options...
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