Question

Why it doesn't display POST value?

Error: Notice: Undefined index: q[abc] in line: echo $_POST['q[abc]'];

Thanks!

<form method="POST" action="post.php" name="tq">

    <input type="hidden" name="q[id]" value="1035">

    <input type="radio" name="q[abc]" value="3001"></div>

    <div>A</div>

    <input type="radio" name="q[abc]" value="3002"></div>

    <div>B</div>

    <input type="radio" name="q[abc]" value="3003"></div>

    <div>C</div>

    <input type="submit" name="add" value="Next">

</form>

<?php

if (isset($_POST['add'])) {

    echo $_POST['q[abc]']; //error line

}

?>

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Answer 1

Instead of echo $_POST['q[abc]']; you should try echo $_POST['q']['abc'];