PHP getting out of 'if' condition and continue the next part

Question

I am now implementing a Ajax and the server side programming language is PHP. I need to create a Ajax form verifying and input system for my web app.

$redirectPage = $redirectTime = '';

if($a == 'register') {
    $data = array('name', 'username', 'password', 'gender', 'emailaddress');
    $required = array('name', 'username', 'password');

    foreach($data as $field) {
        if(in_array($field, $required) && (!isset($_POST[$field]) || $_POST[$field] == '')) {
            $type = 'danger';
            $message = 'Please enter all required fields.';
            // *1
        } else {
            $$field = $_POST[$field];
        }
    }

    // Continue with register process
    // Set the redirectPage and redirectTime for JavaScript setTimeout here
} else {
    $type = 'warning';
    $message = 'You usually won\'t be able to see this. But if you did, that means you are trying to hack my website!';
    return;
}

$retval = json_encode(
    array(
        'Type' => $type,
        'Message' => alert($type, $message), // my own function, not important here
        'RedirectPage' => $redirectPage,
        'RedirectTime' => $redirectTime,
    )
);

echo $retval; // The value here will send back to my Ajax

As you see I didn't stopped the handle process even though the post field is not in the required array. Finally it will continue with the rest process.

For *1: This is the place I have tried to put some reserved words here.

continue: For an experienced programmer, you should be noticed that it will only get out of this if condition and continue the next foreach loop.

exit: The rest of the code won't process, by all means nothing to return to my Ajax until its timed out.

break: I thought it will get out of

if($a == 'register')

but it didn't happened.

goto: I don't want to be eaten by dinosaurs except its the only way to do that.

For the rest of the code add an if condition check whether

$type

has been set to 'danger': I don't wanna do this way ... (But if this is the only way ...)

Thank you.

Answer 1

I'm not entirely sure I understand the question, but I believe the issue you're having can be solved by adding some scope. I refactored your code in hopes that it will point you to the right direction.

function sendResponse ($type, $message, $redirectPage, $redirectTime) {

    $retval = json_encode(
        array(
            'Type' => $type,
            'Message' => alert($type, $message), // my own function, not important here
            'RedirectPage' => $redirectPage,
            'RedirectTime' => $redirectTime,
        )
    );

    echo $retval; // The value here will send back to my Ajax
}

function sendRequiredResponse ($redirectPage, $redirectTime) {

    $type = 'danger';
    $message = 'Please enter all required fields.';

    sendResponse($type, $message, $redirectPage, $redirectTime);
}

function sendHackResponse ($redirectPage, $redirectTime) {

    $type = 'warning';
    $message = 'You usually won\'t be able to see this. But if you did, that means you are trying to hack my website!';

    sendResponse($type, $message, $redirectPage, $redirectTime);
}

function sendRegisteredResponse ($redirectPage, $redirectTime) {

    $type = 'success';
    $message = 'Registration successfull';

    sendResponse($type, $message, $redirectPage, $redirectTime);
}

function register($redirectPage, $redirectTime) {

    $data = array('name', 'username', 'password', 'gender', 'emailaddress');
    $required = array('name', 'username', 'password');

    foreach($data as $field) {

        if(in_array($field, $required) && (!isset($_POST[$field]) || $_POST[$field] == '')) {

            /**** registration stops *****/
            return sendRequiredResponse($redirectPage, $redirectTime);
        }

        $$field = $_POST[$field];
    }

    // Continue with register process
    // Set the redirectPage and redirectTime for JavaScript setTimeout here

    sendRegisteredResponse($redirectPage, $redirectTime);
}

$redirectPage = $redirectTime = '';

if($a === 'register') {
    register($redirectPage, $redirectTime);
} else {
    sendHackResponse($redirectPage, $redirectTime);
}