Validation

acey

simple question 🙂

would like to know how to count characters

but would like usernames to be over 4 characters , how can i validate ?

laserlight

Read the PHP manual on strlen()

As for validation, it should be a simple matter of using that function on $_POST['username'] when the form is submitted, then comparing the value returned.

acey

lol , thx

i was using this but it was a no go , i think its more javascript hehe

if ($_POST['username']<4)

laserlight

the check should be:

if (strlen($_POST['username']) < 4)

acey

yes , thanks again

phpprogrammer

Dear Friend,

why cant u do the validation in client side only

<html><body>
<script language=javascript>
function validate(temp)
{

if(temp.value.length<5)
{
alert('should be morethan 4 characters')

}

}
</script>
<form>

regards
bvsureshbabu

phpprogrammer

Dear Friend,

you can also use this type of code for clientside validations

i think this will easier

<form>

regards
bvsureshbabu

laserlight

I would say that you should still check on the server side, since it is easy to bypass clientside checking.

help_needed

I have a question re: validation.

For example, if i have this:

<?

if ($submit)
{

if (!$_POST[name | !$_POST[email])
{
echo "Name or Email are missing.";
}

else
{
echo "Both are there.";
}

}

else
{
include ("form.html");
}

Now, the question...If i leave out a field, it display the error...But, when I click back, the field I DID FILL OUT (not empty) is now clear.

So the field that I DID NOT MISS also appears empty when I click on back. Is there anyway to keep the data that has already been entered in the form field, when I click on back upon a validation?

THanks,