There is no function named main() except
in the PHP source. In PHP 4.3.0, a new type of error handling
in the PHP source (php_error_docref) was introduced. One feature
is to provide links to a manual page in PHP error messages when
the PHP directives html_errors
(on by default) and docref_root
(on by default until PHP 4.3.2) are set.
Sometimes error messages refer to a manual page for the function
main() which is why this page exists. Please
add a user comment below that mentions what PHP function caused the
error that linked to main() and it will be
fixed and properly documented.
Table 1. Known errors that point to main()
See also html_errors