[SOLVED] regular expressions

[plutomed]

my friend tryed to help me with but i still dont get it ???

 

i have a form with an email field

 

how do make sure the user put an @ and a . in the field?

[effigy]

What code have you tried?

[plutomed]

<script language="javascript" type="text/javascript">
var myRegxp = /^[\d\w]@[\d\w]\.[\d\w]$/g;

document.write(myRegxp.test(<? $_POST['email'] ?>));
</script>

 

thats proberly wrong because i tryed to change it and i copied it of another site

[effigy]

If you're reading $_POST directly, why not use PHP?

 

<script language="javascript" type="text/javascript">
var regex_valid_email = /^[-\w.]+@[-\w.]+\.[A-Za-z]{2,4}$/;
function verify_email (obj) {
	if (regex_valid_email.test(obj.value)) {
		alert('Valid');
	}
	else {
		alert('Invalid');
	}
}
</script>

<input type="text" name="email" onblur="verify_email(this);"/>

[plutomed]

ok thankyou how do you do it with php then if its easier

[effigy]

Use PHP's preg_match function.

[plutomed]

ok thankyou

[plutomed]

can u post a link to all the php regex or write them please

[effigy]

Here's an example. There are regex links in my signature.

 

<?php
if ($_POST) {
	echo preg_match('/^[-\w.]+@[-\w.]+\.[A-Za-z]{2,4}\z/', $_POST['email']) ?
		'OK' :
		'Not OK' ;
	echo '<br><a href="', $_SERVER['PHP_SELF'], '">Test again</a>';
}
else {
	?>
		<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
			<input type="text" name="email">
			<input type="submit">
		</form>
	<?php
}
?>

[plutomed]

thanks for your help i got it workin now  ;D