number validation
this is my register form.
where,how and what is the php code can be inserted so that only numbers can be as an input for phone number field??
thank you
<?php
echo <<<EOS
<html>
<head>
<script type="text/javascript">
function validate()
{
x=document.myForm
at=x.myEmail.value.indexOf("@ivoli.com")
code=x.myCode.value
firstname=x.myName.value
username=x.myuser.value
add=x.myadd.value
pass=x.mypass.value
repass=x.myrepass.value
submitOK="True"
if (at==-1)
{
alert("Not a valid e-mail")
submitOK="False"
}
if (code<0 || code>9)
{
alert("Your code must be between 0 and 9")
submitOK="False"
}
if (firstname.length==0)
{
alert("Enter your Name")
submitOK="False"
}
if ( username.length==0)
{
alert("Enter user name")
submitOK="False"
}
if (pass.length ==0)
{
alert("Enter Password")
submitOK="False"
}
if (pass!=repass)
{
alert("retype password")
submitOK="False"
}
if (add.length==0 )
{
alert("Enter Address")
submitOK="False"
}
if (submitOK=="False")
{
return false
}
}
</script>
</head>
<body>
<table width="400" height="100" align="center">
<form name="myForm" action="log.php" method="post" onsubmit="return validate()">
<tr>
<td>First name:</td>
<td><input type="text" name="myName"
maxlength="20" value=""></td>
</tr>
<tr>
<td>User Name: </td>
<td><input type="text" name="myuser" maxlength="10" value=""></td>
</tr>
<tr>
<td>Password: </td>
<td><input type="password" name="mypass" maxlength="6" value=""></td>
</tr>
<tr>
<td>Retype Password:</td>
<td><input type="password" name="myrepass" maxlength="6" value=""></td>
</tr>
<tr>
<td>E-Mail:</td>
<td><input type="text" name="myEmail" value=""> </td>
</tr>
<tr>
<td>Phone Number:</td>
<td><input type="text" name="myCode" value=""></td>
</tr>
<tr>
<td>Address: </td>
<td><input type="text" name="myadd" maxlength="25" value=""></td>
</tr>
<tr>
<td><input type="submit" value="SUBMIT" value=""> </td>
</tr>
</form>
</table>
</body>
</html>
EOS;
?>
