PHP two fields only one needs to be filled out?

I

Iceman

New member
Hello,

I have a php form which takes phone numbers.

I have a text box for landline and a text box for mobile numbers. Only one of the text boxes needs to be filled out.

How do I validate in PHP to make sure one of them is filled out. I am sure it is obvious but I just can't work it out.

Sorry if it is a little confusing. Hope someone can help.

Thanks
I want to try and avoid java script because I am not very strong at it. I was thinking something like the following:

$landline = $_POST['landline'];
$mobile = $_POST['mobile'] ;

if ( ! empty( $landline ) && ! empty( $mobile ) ) {
$contacterror = 'you need to enter at least one contact number';
}
else
{
$contacterror = 'One or more text boxes have been filled out';
}
 
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