Easily fix WordPress POST and REQUEST 404 error on form submission

If you have been trying to submit a form in WordPress and you are receiving a 404 error page, well the chances of the cause being using a reserved keyword can be extremely high. This is because one or many of your field name is being reserved by WordPress.

In the below Code, name=” name”  is a reserved word. Submitting the form will display the bad 404 pages. In order to avoid we can prefix its name=”mytheme_name” or ensure that the variables we use are not reserved by WordPress?

<form action="<?php the_permalink(); ?>" method="post">
Name: <input type="text" name="name"><br>
<input type="submit" name="sub">
</form>

What’s the mean “Reserved by WordPress” and “What are the keywords being reserved” ?

The following keywords or terms are being used by WordPress for important operations as a result, WordPress prevents you from using them. If you have been following WordPress best practices, you wouldn’t encounter an issue as it is a good practice to prefix every variable with a unique prefix word. This not only avoids conflict with WordPress but with other plugins and themes