Lol? I never said it did require it?
I just said make sure either if hes using setcookie OR session_start() they should be on the first line.
or
header()...
Use this technique to help find this error in PHP:
- put this code on the file BEFORE the code causing the error:
PHP:
// this is the code:
if (headers_sent()) {
die('headers sent before this.');
}
// example of error-causing code:
set_cookie(..);
- The code will exit the script if headers are already sent.
- View the source of the web-page, and if you see nothing but the text, highlight the entire file.
- Anything before the text "headers sent before this" is the content causing the error.
- If there is a space before the text, then look for a space in the file before '<?php'.
- If there is a line break before the text, look for a line break before '<?php'.
- Remove the problem content.
This is one reason PHP is a gigantic anti-pattern. Note that if you are using multiple PHP files, you must look for space after the '?>' tag as well. Most text editors I use will add an extra line to the end of the file when you save. It is good practice to have a trailing blank line after your programs.. Makes life easier for "future programmer" who edits the file. In PHP, it is good practice to never use the '?>' closing tag. The only reason to use that tag is if you are including HTML or text inside your PHP file, which is bad practice. It is much better to code PHP never relying on the '?>' tag, as it causes so many problems. Furthermore, if you are using multiple PHP files, finding a single space among 20 class files is very time consuming. It is almost worth running a multi-file search for ' <?php' - notice the prefixing space. If it weren't for the popularity, and wide support from shared web hosts, there would be no reason to program in such a hostile environment. So, if you don't have to code in PHP, then I highly recommend an alternative.
