Question

I have two fields in a form (ip:port) seperately. I want to add them together to make one string eg 127.0.0.1:11111 to enter into a database. At the moment I have this form.

        <ul id="textlist">
            <li>IP: <input type="text" maxlength="15" size="15" name="ip[]" value="" />:<input type="text" name="port[]" maxlength="5" size="5" value="27015" /></li>
        </ul>

Which submits to this for parsing.

$ip = array();
foreach ($_POST['ip'] as &$value) {
    if ($value != "") {
            if (preg_match("/[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\:[0-9]{1,5}/", $value)) {
                $ip[] = addslashes(htmlentities($value));
            } else {
                $error = 'Invalid IP Address. Please go back and try again.';
            }
    }
}

$port = array();
foreach ($_POST['port'] as &$value) {
        if ($value != "") {
                $port[] = addslashes(htmlentities($value));
        }
    }
}

I then end up with 2 arrays of ip’s and ports (up to 5 of each) which I want to join together in pairs before adding to a database.

Thanks for any help!

Answer 1

$x = 0
$ip_port = array();
foreach ($_POST['ip'] as &$value) {
    if ($value != "") {
            if (preg_match("/[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\:[0-9]{1,5}/", $value)) {
                $ip_port[$x++]['ip'] = addslashes(htmlentities($value));
            } else {
                $error = 'Invalid IP Address. Please go back and try again.';
            }
    }
}

$x = 0
foreach ($_POST['port'] as &$value) {
        if ($value != "") {
                $ip_port[$x++]['port'] = addslashes(htmlentities($value));
        }
    }
}

foreach ($ip_post as $curr) {
    echo "{$curr['ip']}:{$curr['port']}";
}

this will work as long as your arrays are perfectly parallel. you might consider adding numeric indexes to your HTML form instead of depending on ordering.