php man page for vline

vline(3alleg4)							  Allegro manual						    vline(3alleg4)

NAME
       vline - Draws a vertical line onto the bitmap. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       void vline(BITMAP *bmp, int x, int y1, int y2, int color);

DESCRIPTION
       Draws a vertical line onto the bitmap, from point (x, y1) to (x, y2).

       Note:  vline()  is implemented as an alias to another function.	See ALLEGRO_NO_VHLINE_ALIAS in the `Differences between platforms' section
       for details.

SEE ALSO
       hline(3alleg4), line(3alleg4), drawing_mode(3alleg4), makecol(3alleg4), exrgbhsv(3alleg4), exscroll(3alleg4), extruec(3alleg4)

Allegro 							   version 4.4.2						    vline(3alleg4)