Question

I have an html form with a section that generates inputs with random names.

Each input name is generated with the text “book” at the beginning and random text at the end.

<input type="text" name="book_4552f" />
<input type="text" name="book_3507p" />
<input type="text" name="book_8031b" />

How do I use PHP to get all $_POST variables which start with the text “book”?

Answer 1

The following uses strpos() to check that the POST string begins with book_

foreach($_POST as $key => $value) {
    if (strpos($key, 'book_') === 0) {
        // value starts with book_
    }
}