int  orientation

Default value 0         This variable specifies whether the barcode image should be generated normally or with clockwise or anticlockwise rotation through 90 degrees.

Allowed values

0 - Normal orientation

1 - clockwise rotation by 90 degrees

2 anti-clockwise rotation by 90 degrees

-1 inverted (ie rotated by 180 degrees

Note that only TrueType or compatible fonts may be rotated

 

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int show_checkdigit