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PHP required field won't accept 0


virtual

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I am trying to put a required field for the $children field into an email reservation form. However if I enter 0 in this field I get an error message, any other number or text is fine, but if the guests don't have kids, I don't want to show an error. How do I get the PHP script to accept 0 as a valid answer? Help will be much appreciated.

 

Here is the script:

 

<?php

 

$ip = $_POST['ip'];

$httpref = $_POST['httpref'];

$httpagent = $_POST['httpagent'];

$visitor = $_POST['visitor'];

$visitormail = $_POST['visitormail'];

$adults = $_POST['adults'];

$children = $_POST['children'];

$age = $_POST['age'];

$notes = $_POST['notes'];

$attn = $_POST['attn'];

 

 

if (eregi('http:', $notes)) {

die ("Do NOT try that! ! ");

}

if(!$visitormail == "" && (!strstr($visitormail,"@") || !strstr($visitormail,".")))

{

echo "<h2>Please use browser Back button - Enter valid e-mail</h2>\n";

$badinput = "<h2>Your email was NOT submitted</h2>\n";

echo $badinput;

die ();

}

 

if(empty($visitor) || empty($visitormail) || empty($adults) || empty($children) || empty($notes )) {

echo "<h2>Please use browser Back button - Fill in all fields</h2>\n";

die ();

}

 

$todayis = date("l, F j, Y, g:i a") ;

 

$notes = stripcslashes($notes);

 

$message = " $todayis [EST] \n

Phone: $phone \n

Message: $notes \n

From: $visitor ($visitormail)\n

Additional Info : IP = $ip \n

Referral : $httpref \n

 

";

 

$from = "From: $visitormail\r\n";

 

 

mail("me@atmysite.com", $subject, $message, $from);

 

?>

 

<p align="center">

Date: <?php echo $todayis ?>

<br />

Thank you <?php echo $visitor ?> for your message, we will contact you shortly.

<br />

 

<br />

Message:<br />

<?php $notesout = str_replace("\r", "<br/>", $notes);

echo $notesout; ?>

<br />

<?php echo $ip ?>

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