PHPLOVER questions

• filesize() always reads 0 bytes even though file size isn't 0 bytes
• Is it good to use a default of NULL?
• What does the `close()` method of the Mysqli Statement?
• htmlspecialchars & ENT_QUOTES not working?
• mb_strlen() is it enough?
• What is PHP track_errors?
• Mode Rewrite; with/without trailing slash on end of url?
• ORDER By Unix Timestamp DESC or ASC?
• Should I use PHPMailer or SwiftMailer? [duplicate]
• .htaccess, order allow, deny, deny from all: confused?

PHPLOVER answers