PHP Validation Script

[tech_angel420]

Hi everyone... Can anyone give me a general idea of how to start writing a PHP Form Validation script?? Javascript just isn't working for me because first off, I am a super beginner in that department...

[webmaster]

What exactly do you mean with Form Validation script?

[tech_angel420]

I have a payment form, written in PHP... I have various fields that I want specific information validated... I have required fields, character-type fields, etc... Normally, from what I understand, a javascript is used to do this. I am having issues like you wouldn't believe with JS and I'm sick of it so I want to do the validation in PHP and then following that procedure, the results will post in a database.

[webmaster]

Here is two things that could help you:

1. Set a special amoun to chars in a text input:

Code: Select all

<input type='text' name='description' size='70' maxlength='70'>

2. A field must contain information:

Code: Select all

<? if(empty($_POST['description'])) { echo "YOU MUST FILL-IN THE DESCRIPTION-INPUT"; }?>

[tech_angel420]

I'll give that concept a whirl... what if I need to ensure that like a date is entered in a certain way? Or to specify the number of characters for say like a phone number or zip code?? And also the email?? LOL... I'm hopeless..

[webmaster]

I definately don't think this is the best way, but hopefully, it'll work. For example you want somebody to enter a zip-code like this: 123-45

Code: Select all

<?
$forth = substr($_POST['zip'], 3, 2);

if($forth != "-") {
   echo "ERROR";
}
?>

Read more about the substr function here: http://se.php.net/manual/en/function.substr.php

[Malcolm]

You're going to need to use regular expressions (regex) if you need your data entered in a specific way; or better yet you can use regex to format non-proper input.

Show me what type of input you're grabbing for the user and how you'd like them to enter the data and I'll give you a few examples

[tech_angel420]

Mkay, I appreciate the help... Here's some of my fields:

Code: Select all

   echo "<div id=\"form\" style=\"position:absolute; top:180px; left:156px; z-index:3; padding:0px; width:768px; height: 1207px;\">
      <form action='$editFormAction' method='post' name='formInsertRecord' onsubmit='return validateForm(this)'>\n";
         print ("<p><input type=\"hidden\" name=\"send\" value=\"true\" />\n");
      print ("</p><br>\n");
      //Customer Information//
      print ("<p class=\"pmtheads\">Customer Information</p><br>\n");
      print ("<div class=\"row\"><span class=\"label\">Account Number:</span><span class=\"formw2\"><input name=\"textAccountNumber\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>First Name:</span><span class=\"formw2\"><input name=\"textFirstName\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Last Name:</span><span class=\"formw2\"><input name=\"textLastName\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Address:</span><span class=\"formw2\"><input name=\"textAddress1\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\">Address Line 2:</span><span class=\"formw2\"><input name=\"textAddress2\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>City:</span><span class=\"formw2\"><input name=\"textCity\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>State:</span><span class=\"formSelect\"><span class =\"formw3\"><select name=\"selectSt\">");
      foreach ($StateList_array as $ctype1)
      {
      print("<option>" . $ctype1 . "</option>");
      }
      print ("</select></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Zip code:</span><span class=\"formw2\"><input name=\"textZip\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Phone number:</span><span class=\"formw2\"><input name=\"textPhone\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>E-mail address:</span><span class=\"formw2\"><input name=\"textEmail\" /></span></div><br>\n");
      //Payment Data//
      print ("<p class=\"pmtheads\">Payment Information</p><br>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Payment Amount:</span><span class=\"formw2\"><input name=\"textAmount\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\">Payment Attention:</span><span class=\"formw2\"><input name=\"PayAttn\" /></span></div><br>\n");
      //Payment Types - Credit//
      print ("<div class=\"row3\"><p class=\"pmtheads2\">Please choose one:</span>&nbsp;
           <label for=\"Check\">Check</label><span class=\"formw3\"><input name=\"ToggleDivs\" type=\"radio\" value=\"Check\" onClick=\"Toggle('Div1')\" id=\"Div11\"></span>&nbsp;
           <label for=\"Credit\">Credit</label><span class=\"formw3\"><input  name=\"ToggleDivs\" type=\"radio\" value=\"Credit\" onClick=\"Toggle('Div2')\" id=\"Div22\" ></span>&nbsp;
           <label for=\"EasyPay\">EasyPay</label><span class=\"formw3\"><input  name=\"ToggleDivs\" type=\"radio\" value=\"EasyPay\" onClick=\"Toggle('Div3')\" id=\"Div33\"></span></div><br>\n");
      print ("<div id=\"Div1\" style=\"display:none;\"><br>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Credit Card Type:</span><span class =\"formw3\"><select name=\"selectCCType\">&nbsp;");
      foreach ($CCList_array as $ctype2)
      {
      print("<option>" . $ctype2 . "</option>");
      }
      print ("</select></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Name on Card:</span><span class=\"formw2\"><input name=\"textCCName\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Credit Card Number:</span><span class=\"formw2\"><input name=\"textCCNumber\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Expiration Month and Year:</span><span class =\"formw3\"><select name=\"selectCCExpMonth\">");
      foreach ($ExpMonth_array as $ctype3)
      {
      print("<option>" . $ctype3 . "</option>");
      }
      print ("</select></span>\&nbsp;");
         
      print ("<span class =\"formw3\"><select name=\"selectCCType\">");
      foreach ($ExpYear_array as $ctype4)
      {
      print ("<option>" . $ctype4 . "</option>");
      }
      print ("</select></span></div></div>\n");
       //Payment Types - Check//
       print ("<div id=\"Div2\" style=\"display:none;\"><br>\n");         
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Name on Check:</span><span class=\"formw2\"><input name=\"textCHName\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Check Number:</span><span class=\"formw2\"><input name=\"textCHNumber\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Account Number:</span><span class=\"formw2\"><input name=\"textCHAccountNum\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Routing Number:</span><span class=\"formw2\"><input name=\"textCHRouting\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Bank Name:</span><span class=\"formw2\"><input name=\"textCHBank\" /></span></div>\n");
      print ("<div class=\"row\"><span class=\"label\"><span class=\"asterisk\">*</span>Payment Date:</span><span class=\"formw2\"><input name=\"textCHDate\" /></span></div></div><br>\n");


[tech_angel420]

lol... holy cow.. I didn't realize I'd copied over so much.. lol sorry.

[webmaster]

Press edit in that post and change the code.