W3C validation Illegal character in query: not a URL code point

Question

The w3C validator has found an error in my HTML:

Bad value comment_add.php?id= 7 for attribute action on element form: Illegal character in query: not a URL code point.

It marked the closing ">" tag as a problem

<form method="post" action="comment_add.php?id= 7"**>**

The code which generated that HTML is:

<form method="post" action="comment_add.php?id=<?= $id_post;?>">

I have a few other lines with the same issue.

How can I solve this problem?

Kara · Accepted Answer · 2014-08-11 16:34:49Z

3

There should not be any spaces in the action of the form.

You should change your code to:

<form method="post" action="comment_add.php?id=<?=$id_post;?>">

If you need a space in your URL is should be encoded as %20. So the code would then look like:

<form method="post" action="comment_add.php?id=%20<?=$id_post;?>">

answered Aug 11, 2014 at 16:34

Kara

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3 Comments

elwindly Over a year ago

It doesn't seem to have any effect but i have just noticed that this problem only applies to $id_post numbers under 10. It automatically puts a blank character before the number.

Kara Over a year ago

What is the data type of $id_post? If it is a string you can use trim to remove leading spaces.

elwindly Over a year ago

Ok, now I can see my error, the $id_post had a blank space because on the main page there was still a blank space in my code, therefore all the other code carried that blank space afterwards, so your solution is absolutely correct! Thank you!

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