Only other thing I can think of is to make sure there are no blank lines or spaces before your opening <?php in your script, and that will screw up the header (ie. It won't get sent), but it should ...
A security researcher has found a severe security flaw in one of the internet's most popular PHP libraries for creating PDF files. The vulnerability impacts TCPDF, one of the "big three" PHP libraries ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback