View file functions.php
<?php
function valid_number($number)
{
$number=trim($number);
if ($number=='')
{$valid=0;
return $valid;
}
if (!preg_match('/^[\d]+$/iu', $number))
{$valid=0;
return $valid;
}
return $number;
}
?>
<?php
function valid_number($number)
{
$number=trim($number);
if ($number=='')
{$valid=0;
return $valid;
}
if (!preg_match('/^[\d]+$/iu', $number))
{$valid=0;
return $valid;
}
return $number;
}
?>