PHP : HEREDOC

http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.heredoc

Codeigniter : select between two date

http://stackoverflow.com/questions/4875668/codeigniter-getting-data-posted-in-between-two-dates

PHP : หาวันสุดท้ายของเดือน

http://stackoverflow.com/questions/2680501/how-can-i-find-the-first-and-last-date-in-a-month-using-php

ฟอนต์ THSarabunNew สำหรับ TCPDF (THSarabunNew font for TCPDF)

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