Hey
What's the easiest way of validating form fields by using PHP
Cheers
Tom Evans
CSS Codes
Junior Coders
PHP Form Validation
Hey
What's the easiest way of validating form fields by using PHP
Cheers
Tom Evans
Modtoreador
The equality operator.
Twey | I understand English | 日本語が分かります | mi jimpe fi le jbobau | mi esperanton komprenas | je comprends français | entiendo español | tôi ít hiểu tiếng Việt | ich verstehe ein bisschen Deutsch | beware XHTML | common coding mistakes | tutorials | various stuff | argh PHP!
Junior Coders
gold i have a good form validator tha ti created if you would like it
New Comer (less than 5 posts)
pkcidstudio, may I have a copy of your form validation?
Global Moderator
This is an incredibly general question.
What are you verifying?
Basically...
<?php
if ($_GET['variable'] == "value") {
dostuff();
}
?>
or, perhaps,
<?php
if ($_GET['variable'] != "value") {
die();
}
?>
But what are you trying to accomplish?
Using the GET and POST methods of forms and the $_POST/$_GET arrays, you can get the values submitted by the form. Then you can use ifs, etc. to "verify" them.
Daniel - Freelance Web Design | <?php?> | <html>| español | Deutsch | italiano | português | català | un peu de français | some knowledge of several other languages: I can sometimes help translate here on DD | Linguistics Forum
New Comer (less than 5 posts)
I have a registration form in which all the fields must be entered. If they are not entered a list of the fields not entered should be displayed.
Here is the coding I have without the form validation
<?php require_once('Connections/conJay.php'); ?>
<?php
// *** Redirect if username exists
$MM_flag="MM_insert";
if (isset($_POST[$MM_flag])) {
$MM_dupKeyRedirect="errorPage.html";
$loginUsername = $_POST['txtUserId'];
$LoginRS__query = "SELECT user_id FROM users WHERE user_id='" . $loginUsername
. "'";
mysql_select_db($database_conJay, $conJay);
$LoginRS=mysql_query($LoginRS__query, $conJay) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
//if there is a row in the database, the username was found - can not add the
requested username
if($loginFoundUser){
$MM_qsChar = "?";
//append the username to the redirect page
if (substr_count($MM_dupKeyRedirect,"?") >=1) $MM_qsChar = "&";
$MM_dupKeyRedirect = $MM_dupKeyRedirect . $MM_qsChar
."requsername=".$loginUsername;
header ("Location: $MM_dupKeyRedirect");
exit;
}
}
function GetSQLValueString($theValue, $theType, $theDefinedValue = "",
$theNotDefinedValue = "")
{
$theValue = (!get_magic_quotes_gpc()) ? addslashes($theValue) : $theValue;
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
$editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "formRegister")) {
$insertSQL = sprintf("INSERT INTO users (user_id, f_name, l_name, password,
security_answer, email, Staff_Key) VALUES (%s, %s, %s, %s, %s, %s, %s)",
GetSQLValueString($_POST['txtUserId'], "text"),
GetSQLValueString($_POST['txtFname'], "text"),
GetSQLValueString($_POST['txtLname'], "text"),
GetSQLValueString($_POST['txtPassword'], "text"),
GetSQLValueString($_POST['txtSecurity'], "text"),
GetSQLValueString($_POST['txtEmail'], "text"),
GetSQLValueString($_POST['txtKeyPhrase'], "text"));
mysql_select_db($database_conJay, $conJay);
$Result1 = mysql_query($insertSQL, $conJay) or die(mysql_error());
$insertGoTo = "registration_ok.html";
if (isset($_SERVER['QUERY_STRING'])) {
$insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
$insertGoTo .= $_SERVER['QUERY_STRING'];
}
header(sprintf("Location: %s", $insertGoTo));
}
?><!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>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<!-- TemplateBeginEditable name="doctitle" -->
<title>RegistrationForm</title>
<!-- TemplateEndEditable -->
<!-- TemplateBeginEditable name="head" --><!-- TemplateEndEditable -->
<style type="text/css">
<!--
.style9 {font-family: "Times New Roman", Times, serif}
.style10 {
font-family: "Times New Roman", Times, serif;
font-size: large;
font-weight: bold;
}
.style12 {font-size: large; font-weight: bold; }
.style14 {font-size: large}
.style15 {
font-size: xx-large;
font-family: "Times New Roman", Times, serif;
font-weight: bold;
}
.style19 {font-size: medium}
body {
background-image: url(images/center/pattern1.jpg);
background-repeat: repeat;
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
}
-->
</style>
</head>
<body>
<form id="formRegister" name="formRegister" method="POST" action="<?php echo
$editFormAction; ?>">
<label>
<blockquote>
<p align="center"><label><span class="style15">Registration
Form</span></label>
<span class="style15"> </span></p>
<p> </p>
<table width="498" height="332" border="1" align="center">
<tr>
<td width="295"><div align="right" class="style12"><span
class="style9">First Name</span></div></td>
<td width="193"><div align="center">
<input name="txtFname" type="text" id="txtFname" />
</div></td>
</tr>
<tr>
<td><div align="right" class="style12"><span class="style9">Last Name
</span></div></td>
<td><div align="center">
<input name="txtLname" type="text" id="txtLname" />
</div></td>
</tr>
<tr>
<td height="26"><div align="right" class="style12"><span
class="style9">Email </span></div></td>
<td><div align="center">
<input name="txtEmail" type="text" id="txtEmail" />
</div></td>
</tr>
<tr>
<td height="32"><span class="style10">
<label> </label>
</span> <span class="style12">
<label> </label>
</span> <span class="style12">
<label></label>
</span> <span class="style14"><strong>
<label></label>
</strong>
<label></label>
</span>
<div align="right" class="style12"><span class="style9">Create a User
ID</span></div>
</td>
<td><div align="center">
<input name="txtUserId" type="text" id="txtUserId" />
</div></td>
</tr>
<tr>
<td><div align="right" class="style12"><span class="style9">Password
</span></div></td>
<td><div align="center">
<input name="txtPassword" type="password" id="txtPassword" />
</div></td>
</tr>
<tr>
<td height="30"><div align="right" class="style12"><span
class="style9">Re-enter Password</span></div></td>
<td><div align="center">
<input name="txtPassword2" type="password" id="txtPassword2" />
</div></td>
</tr>
<tr>
<td height="40"><div align="right" class="style12">
<p class="style9">Mothers maiden name</p>
</div>
<div align="right"><span class="style19">used to retrieve lost
password</span></div></td>
<td><div align="center">
<input name="txtSecurity" type="text" id="txtSecurity" />
</div></td>
</tr>
<tr>
<td height="45">
<div align="center" class="style10">
<div align="right">Staff enter key phrase </div>
</div></td>
<td><label>
<div align="center">
<input name="txtKeyPhrase" type="text" id="txtKeyPhrase" />
</div>
</label></td>
</tr>
<tr>
<td><div align="center"></div></td>
<td><div align="center">
<p>
<input name="btnSubmit" type="submit" id="btnSubmit" value="Submit"
/>
<input name="btnReset" type="reset" id="btnReset" value="Reset" />
</p>
</div></td>
</tr>
</table>
<p> </p>
</blockquote>
</label>
<label>
<p>
<label></label>
</p>
<p>
</label>
<label>
</p>
<blockquote> </blockquote>
</label>
<label>
<blockquote>
<p> </p>
<p> </p>
</blockquote>
<input type="hidden" name="MM_insert" value="formRegister">
</label>
</form>
</body>
</html>
Junior Coders
sorry it took so long. hope this helps this will generate a error above the form
formPHP Code:<?php
if (isset($_POST["submit"]))
{
$error = array();
$message = "";
$validEmail = "^[0-9a-z~!#$%$_-]([.]?[0-9a-z~!#$%$_-])*" . "@[0-9a-z~!#$%$_-]([.]?[0-9a-z~!#$%$_-])*" . ".[0-9a-z~!#$%$_-]([.]?[0-9a-z~!#$%$_-])*$";
$validName = "^[a-z]*" . " [a-z]*$";
$validZip = "^([0-9]{4,5})$";
if (!eregi($validName, $_POST["name"]))
{
$error[] = 'Name field incomplete, First and Last Please.';
}
if (!eregi($validEmail, $_POST["email"]))
{
$error[] = 'Email field incomplete.';
}
if ($_POST["street"] == "")
{
$error[] = 'Street field incomplete.';
}
if ($_POST["city"] == "")
{
$error[] = 'City field incomplete.';
}
if (!eregi($validZip, $_POST["zip]))
{
$error[] = 'Zip code field must be 4 to 5 digits in length.';
}
if (count($error) == 0)
{
require 'sendingemail.php';
print '<meta http-equiv="refresh" content="0;url=thankyou.php">';
exit;
}
}
?>
Code:<h3>Send Us A Message:</h3> <form method="post" action=""> <?php if (count($error) > 0) { echo '<p>Following errors ocurred:</p>'; echo '<ul>'; foreach ($error as $fail) { echo '<li>'. $fail .'</li>'. "\n"; } echo '</ul>'; } ?> <!-- /////validation end////////validation end//////////validation end/////////validation end////// --> <table width="100%" border="0" cellspacing="0" cellpadding="0" id="tabletimepadding"> <tr> <td>Name: (First / Last)<br/> <input name="name" type="text" value="<?php echo $_POST["name"]; ?>" class="feilds"> </td> </tr> <tr> <td>E-mail:<br/> <input name="email" id="email" value="<?php echo $_POST["email"]; ?>" type="text" class="feilds"> </td> </tr> <tr> <td>Street:<br/> <input name="address" id="address" value="<?php echo $_POST["address"]; ?>" type="text" class="feilds"> </td> </tr> <tr> <td> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td>City:<br/> <input name="city" id="city" value="<?php echo $_POST["city"]; ?>" type="text" class="city"> </td> <td>State:<br/> <select name="state" class="state"> <OPTION VALUE="--">--</OPTION> <OPTION id=""state" value="AK">AK</OPTION> <OPTION id="state" value="AL">AL</OPTION> <OPTION id="state" value="AR">AR</OPTION> <OPTION id="state" value="AZ">AZ</OPTION> <OPTION id="state" value="CA">CA</OPTION> <OPTION id="state" value="CO">CO</OPTION> <OPTION id="state" value="CT">CT</OPTION> <OPTION id="state" value="DC">DC</OPTION> <OPTION id="state" value="DE">DE</OPTION> <OPTION id="state" value="FL">FL</OPTION> <OPTION id="state" value="GA">GA</OPTION> <OPTION id="state" value="HI">HI</OPTION> <OPTION id="state" value="IA">IA</OPTION> <OPTION id="state" value="ID">ID</OPTION> <OPTION id="state" value="IL">IL</OPTION> <OPTION id="state" value="IN">IN</OPTION> <OPTION id="state" value="KS">KS</OPTION> <OPTION id="state" value="KY">KY</OPTION> <OPTION id="state" value="LA">LA</OPTION> <OPTION id="state" value="MA">MA</OPTION> <OPTION id="state" value="MD">MD</OPTION> <OPTION id="state" value="ME">ME</OPTION> <OPTION id="state" value="MI">MI</OPTION> <OPTION id="state" value="MN">MN</OPTION> <OPTION id="state" value="MO">MO</OPTION> <OPTION id="state" value="MS">MS</OPTION> <OPTION id="state" value="MT">MT</OPTION> <OPTION id="state" value="NC">NC</OPTION> <OPTION id="state" value="ND">ND</OPTION> <OPTION id="state" value="NE">NE</OPTION> <OPTION id="state" value="NH">NH</OPTION> <OPTION id="state" value="AK">NJ</OPTION> <OPTION id="state" value="NM">NM</OPTION> <OPTION id="state" value="NV">NV</OPTION> <OPTION id="state" value="NY">NY</OPTION> <OPTION id="state" value="OH">OH</OPTION> <OPTION id="state" value="OK">OK</OPTION> <OPTION id="state" value="OR">OR</OPTION> <OPTION id="state" value="PA">PA</OPTION> <OPTION id="state" value="RI">RI</OPTION> <OPTION id="state" value="SC">SC</OPTION> <OPTION id="state" value="SD">SD</OPTION> <OPTION id="state" value="TN">TN</OPTION> <OPTION id="state" value="TX">TX</OPTION> <OPTION id="state" value="UT">UT</OPTION> <OPTION id="state" value="VA">VA</OPTION> <OPTION id="state" value="VT">VT</OPTION> <OPTION id="state" value="WA">WA</OPTION> <OPTION id="state" value="WI">WI</OPTION> <OPTION id="state" value="WV">WV</OPTION> <OPTION id="state" value="WY">WY</OPTION> </SELECT> </td> <td>Zip:<br/> <input name="zip" id="zip" value="<?php echo $_POST["zip"]; ?>" type="text" class="zip" maxlength="5"> </td> </tr> </table> </td> </tr> <!-- <tr> <td> <table border="0" cellspacing="0" cellpadding="0"> <tr> <td> Phone:<br/> <input name="phone" type="text" class="phone"> </td> <td> Mobile:<br/> <input name="phone" type="text" class="phone2"> </td> </tr> </table> </td> </tr>--> <tr> <td>Subject:<br/> <select name="subject"> <option id="subject" value="Customer Service">Customer Service</option> <option id="subject" value="Product Information">Product Information</option> <option id="subject" value="Web Site">Web Site</option> <option id="subject" value="Product Testimonial*">Product Testimonial*</option> <option id="subject" value="Address Change">Address Change</option> <option id="subject" value=" Newsletter">Hardline Newsletter</option> <option id="subject" value="Employment Opportunities">Employment Opportunities</option> <option id="subject" value="Other">Other</option> </select> </td> </tr> <tr> <td>Comments:<br/> <textarea rows="25" class="bigfeilds" id="comments" name="abb7"></textarea> </td> </tr> </table> <input type="submit" name="submit" id="send" value="Send ›" /> </form>
Posting Permissions
Reply With Quote
Bookmarks