TCPDF::write2DBarcode()
Method: Print 2D Barcode.
Source: includes/lib/tcpdf/tcpdf.php:15570
TCPDF_FONTS::UTF8ArrayToUniArray()
Method: Convert an array of UTF8 values to array of unicode characters
Source: includes/lib/tcpdf/include/tcpdf_fonts.php:1779
TCPDF_FONTS::UniArrSubString()
Method: Extract a slice of the $uniarr array and return it as string.
Source: includes/lib/tcpdf/include/tcpdf_fonts.php:1818