Junior Coders
form validation
Hey guys.
Is there a javascript or other serverside script out there that will allow me to check and see if a required form element has a certain value?
Here is my current code, it might give you a lead to what I mean:
HTML Code:<form action="netxpage.php"> ID: <input type="text" name="id"><br> // This field requires the validation, it must have a certain value in it for the //user to procede. <input type="submit" value="Continue"> </form>
Last edited by bjf98; 01-22-2008 at 08:59 PM.
Senior Coders
yes of course. would you prefer it javascript(client) or php(server) (i would choose php, almost impossible to trick)? what do you want the syntax to be? e.g. xxx-xxx-xxx or xxxxxxxxx or only letters or only numbers or a combination of both?
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Junior Coders
How about php with a santax of xxxxxxxxx and only #'s.
Senior Coders
Edit: script changed
your form(must be .php):
validate.php:HTML Code:<form action="validate.php" method="post"> <div style="color: red"><?php if ($error) { echo $error; } ?></div> ID: <input type="text" name="id"><br> <input type="submit" value="Continue"> </form>
PHP Code:<?php
$nextpage=""; //the page to go to if there are no errors e.g. nextpage.php
$formpage=""; //the form page
$string = $_POST['id'];
if ($string==null) {
$error = "You did not enter anything.";
} else {
if (!eregi('^[0-9]{9}$', $string)) {
$error = "'$string' is not a valid id.";
}
}
if ($error == null) {
echo "<script type=\"text/javascript\">
window.location=\"".$nextpage."\";
</script>
<p>If you were not redirected click <a href=\"".$nextpage."\">here.</a></p>";
} else {
include($formpage);
}
?>
Last edited by Master_script_maker; 01-19-2008 at 09:24 PM.
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Junior Coders
Tks!
Uh.. where does the valid id get entered in the script?
Senior Coders
do you mean where the script gets the content of the ip input, or the form?
[Jasme Library (Javascript Motion Effects)] My Site
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There are 10 kinds of people in the world, those that understand binary and those that don't.
Junior Coders
the id that has to match the one the user enters
Senior Coders
i think i misinterpreted your fist post. you wanted to use the id to login?
[Jasme Library (Javascript Motion Effects)] My Site
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There are 10 kinds of people in the world, those that understand binary and those that don't.
Regular Coders
Does he just want something like:
Then a form as so:Code:$id=$_POST['id']; if ($id=="1232343") { print(" <head> <script type=\"javascript\"> window.location='nextpage.html'; </script> <body> </body>"); } else { print(" <head> <script type=\"javascript\"> setTimeOut("window.location='javascript.go:history(-1)'",5000); </script> <body> ID wrong, please try again. </body> }
That is very simple, should work just fine for 1, 2, 3, up to maybe 6 IDs but if more then you shouldn't use this method most likely.Code:<form action="thephp.php" method="post"> <input type="text" name="id" value="Type ID in here."> <input type="submit" value="Check ID"> </form>
Also someone had best check to make sure the "javascript.go:history(-1) is right, I believe it is but I can't be sure.
Tim
Junior Coders
Hi Tim
Tks for the script, but there seems to be a error in line 18.
Here is the error code:
Parse error: syntax error, unexpected T_STRING in /***/****/***/***/***/thephp.php on line 18
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