RE: PHP: form validation

A-Wing — Tue Dec 27, 2005 2:04 pm

Author: A-Wing

Posted: Tue Dec 27, 2005 2:04 pm

Although sessions aren't so wonderful once you hit a round robin cluster of servers

RE: PHP: form validation

grogoreo — Fri Dec 23, 2005 2:10 pm

Author: grogoreo

Posted: Fri Dec 23, 2005 2:10 pm

Wow thanks CJLL

RE: PHP: form validation

CJLL — Wed Dec 21, 2005 8:28 pm

Author: CJLL

Posted: Wed Dec 21, 2005 8:28 pm

Welcome to the wonderful world of sessions:

http://www.php.net/manual/en/ref.session.php

There are plenty of examples to help you get started

PHP: form validation

grogoreo — Mon Dec 12, 2005 9:08 pm

Author: grogoreo

Posted: Mon Dec 12, 2005 9:08 pm

hi

I have two questions, firstly, would you mind having a look at my code to see if I have used the code from a LinuxFormat tutorial (LXF65) correctly. The validation code should be fine, as I have just copied that, I mean how I have implemented the forms to connect with the validation. The second question is, how can I store the validated form fields from each form. I am sure an array is the best way, so could I create an array when the page is started then keep on adding to it with each form submit.

The reason I have different sets of forms is because I'm going to use this for an application form for the web site I'm making for my IT course. I need to validate form data. The fields in the form now are just temporary.

Here's the code:

Code:

<?php
// Check to see if $_POST is set
if (isset($_POST)) {
   $errors = array();
   foreach($_POST['form'] as $var => $val) {
      // split the varible name e.g. rs_name would be split into 'rs' and 'name'
      $name = explode("_", $var);
      if (count ($name) == 2) {
         // this has a prefix
         $parseblock = $name[0];
         $varname = $name[1];
         $parselen = strlen($parseblock);
         for ($i = 0; $i < $parselen; ++$i) {
            // loop through each letter in the prefix
            switch ($parseblock[$i]) {
               case "r";
                  // field is required
                  if (!strlen($val)) {
                     $errors[] = "<strong>$varname</strong> is a required field";
                     break 2;
                  }
                  break;
               case "i";
                  // field should be int
                  if (!is_numeric($val)) {
                     $errors[] = "<strong>$varname</strong> cannot be set to <em>$val</em>";
                     break 2;
                  }
                  break;
               case "s";
                  // field should be string
                  if (!is_string($val)) {
                     $erros[] = "<strong>$varname</strong> cannot be set to <em>$val</em>";
                     break 2;
                  }
                  break;
               }
            }
         } else {
            // this has no prefix
            $varname = $name[0];
         }
   }
      if (count($errors)) {
         // there were validation errors!
         foreach($errors as $val) {
            echo "$val<br />";
         }
      }
}

if ($_GET['stage'] == '2') {
   // Stage 2
   echo <<<FRMUT
   <form action="validation_form.php?stage=3" method="post">
   Comment: <input type="text" name="form[r_Comment]" /><br />

   <input type="hidden" name="stage_3">

   <input type="submit" value="Go" />
   </form>
FRMUT;
} else
if ($_GET['stage'] == '3') {
   // Stage 3
   echo <<<FRMUT
   <form action="validation_form.php?stage=4" method="post">
   Age: <input type="text" name="form[ri_Age]" /><br />

   <input type="hidden" name="stage_4">

   <input type="submit" value="Go" />
   </form>
FRMUT;
} else
if ($_GET['stage'] == '4') {
   echo "Your application is being processed<br />";
   echo "Thank you";
} else {
   // Stage 1
   echo <<<FRMUT
   <form action="validation_form.php?stage=2" method="post">
   Name: <input type="text" name="form[rs_Name]" /><br />

   <input type="hidden" name="stage_2">

   <input type="submit" value="Go" />
   </form>
FRMUT;
}
?>

Thanks,
Greg

Linux Format forums

RE: PHP: form validation

RE: PHP: form validation

RE: PHP: form validation

PHP: form validation