TAB delimiting.
Using fputcsv to output a CSV with a tab delimiter is a little tricky since the delimiter field only takes one character.
The answer is to use the chr() function. The ascii code for tab is 9, so chr(9) returns a tab character.
<?php
fputcsv($fp, $foo, '\t'); fputcsv($fp, $foo, ' '); fputcsv($fp, $foo, chr(9)); ?>
==================
it should be:
<?php
fputcsv($fp, $foo, "\t");
?>
you just forgot that single quotes are literal...meaning whatever you put there that's what will come out so '\t' would be same as 't' because \ in that case would be only used for escaping but if you use double quotes then that would work.
