A PHP User - 05 Dec 2008
<html>
<head>
<title>Contact Form</title>
</head>
<body>
<form action="msgform.php" method="post" name="msgform" onClick="return checkForm()">
<table width="500" border="0" align="center" cellpadding="2" cellspacing="1" class="maincell">
<tr>
<td width="106">Your Name</td>
<td width="381"><input name="sname" type="text" size="30"></td>
</tr>
<tr>
<td>Your Email</td>
<td>
<input name="email" type="text" size="30">
</td>
</tr>
<tr align="center">
<td colspan="2"><input name="submit" type="submit" value="Send Message" ></td>
</tr>
</table>
</form>
</body>
</html>
<script type="text/javascript" language="javascript">
function checkForm()
{
var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
if (document.msgform.sname.value == "")
{
alert("Name can not be blank");
document.msgform.sname.focus();
return false;
}
else
{
for (var i = 0; i < document.msgform.sname.value.length; i++)
{
if (iChars.indexOf(document.msgform.sname.value.charAt(i)) != -1)
{
alert ("Your Name has special characters. \nThese are not allowed.\n Please remove them and try again.");
document.msgform.sname.focus();
return false;
}
}
}
if(document.msgform.email.value == "")
{
alert("Please enter your email");
document.msgform.email.focus();
return false;
}
else if(document.msgform.email.value.match (/^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/))
{
return true;
}
else
{
alert("Email address is not valid.Please enter in xyz@abc.com");
document.msgform.email.focus();
return false;
}
}
</script>
<?
if(isset($_POST['submit']))
{
$errors = array();//in case there are no errors,
if(empty($_POST['sname']))
{
$errors[0] = "Name cannot be left blank";
}
elseif(empty($_POST['email']))
{
$errors[1] = "Email cannot be left blank";
}
foreach($errors as $val) {
print "Error: ".$val;
include("contact.php");
}
if(co
<html>
<head>
<title>Contact Form</title>
</head>
<body>
<form action="msgform.php" method="post" name="msgform" onClick="return chec A PHP User - 05 Dec 2008
<?
if(isset($_POST['submit']))
{
$errors = array();//in case there are no errors,
if(empty($_POST['sname']))
{
$errors[0] = "Name cannot be left blank";
}
elseif(empty($_POST['email']))
{
$errors[1] = "Email cannot be left blank";
}
foreach($errors as $val) {
print "Error: ".$val;
include("contact.php");
}
if(count($errors) == 0)
{
echo "Welcome ".$_POST['sname'];
}
}
?>
A PHP User - 05 Dec 2008
<html>
<head>
<title>Contact Form</title>
</head>
<body>
<form action="msgform.php" method="post" name="msgform" onClick="return checkForm()">
<table width="500" border="0" align="center" cellpadding="2" cellspacing="1" class="maincell">
<tr>
<td width="106">Your Name</td>
<td width="381"><input name="sname" type="text" size="30"></td>
</tr>
<tr>
<td>Your Email</td>
<td>
<input name="email" type="text" size="30">
</td>
</tr>
<tr align="center">
<td colspan="2"><input name="submit" type="submit" value="Send Message" ></td>
</tr>
</table>
</form>
</body>
</html>
<script type="text/javascript" language="javascript">
function checkForm()
{
var iChars = "!@#$%^&*()+=-[]\\\';,./{}|\":<>?";
if (document.msgform.sname.value == "")
{
alert("Name can not be blank");
document.msgform.sname.focus();
return false;
}
else
{
for (var i = 0; i < document.msgform.sname.value.length; i++)
{
if (iChars.indexOf(document.msgform.sname.value.charAt(i)) != -1)
{
alert ("Your Name has special characters. \nThese are not allowed.\n Please remove them and try again.");
document.msgform.sname.focus();
return false;
}
}
}
if(document.msgform.email.value == "")
{
alert("Please enter your email");
document.msgform.email.focus();
return false;
}
else if(document.msgform.email.value.match (/^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/))
{
return true;
}
else
{
alert("Email address is not valid.Please enter in xyz@abc.com");
document.msgform.email.focus();
return false;
}
}
</script>
<?
if(isset($_POST['submit']))
{
$errors = array();//in case there are no errors,
if(empty($_POST['sname']))
{
$errors[0] = "Name cannot be left blank";
}
elseif(empty($_POST['email']))
{
$errors[1] = "Email cannot be left blank";
}
foreach($errors as $val) {
print "Error: ".$val;
include("contact.php");
}
if(co Tom - 05 Dec 2008
A good way to validate form input is using an array.
<?php
if(isset($_POST['submit'])) {
$errors = array();//in case there are no errors,
//it's still defined
if(empty($_POST['somefield'])) $errors[] = 'Somefield must have text.';
//similar validation
foreach($errors as $val) {
print'<p class="error">Error: '.$val.'</p>'."\n";
}
if(count($errors) == 0) {
//process form
}
}
?> dho - 05 Dec 2008
An alternative is to use an ajax-based approach.
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