How to use php for linear graph functions

How to use php for linear graph functions is so excited for php (as the mainstream development language!
The following describes the linear graph functions of php (as the mainstream development language:

/*
Function description
$ Data: Y axis data (array)
$ Graphdata: Y axis data-percentage (array)
$ Label: x-axis data (array)
$ Height: Image height
$ Width: Image width
$ Font: font size
$ Dot: determines the vertex size.
$ Bg: Background color
$ Line: line color
$ Text: text color
$ Dotcolor: spot color
$ File: output image file name
*/

Function qximage ($ data,
$ Graphdata,
$ Label,
$ Height,
$ Width,
$ Font,
$ Dot,
$ Bg,
$ Line,
$ Text,
$ Dotcolor,
$ File)
{
$ Jc = $ height/100;
$ Fontwidth = imagefontwidth ($ font );
$ Fontheight = imagefontheight ($ font );

$ Image = imagecreate ($ width, $ height + 20 );
$ Bg = imagecolorallocate ($ image, $ bg [0], $ bg [1], $ bg [2]);
$ Line = imagecolorallocate ($ image, $ line [0], $ line [1], $ line [2]);
$ Text = imagecolorallocate ($ image, $ text [0], $ text [1], $ text [2]);
$ Dotcolor = imagecolorallocate ($ image, $ dotcolor [0], $ dotcolor [1], $ dotcolor [2]);
Imageline ($ image, 0, 0, $ height, $ line );
Imageline ($ image, 0, $ height, $ width, $ height, $ line );
For ($ I = 1; $ I <11; $ I ++)
{
Imagedashedline ($ image, 0, $ height-$ jc * $ I * 10, $ width, $ height-$ jc * $ I * 10, $ line );
Imagestring ($ image, $ font, 0, $ height-$ jc * $ I * 10, $ I * 10, $ text );
}
For ($ I = 0; $ I {
# Echo $ tmp ."
";
$ X1 = ($ width-50)/count ($ data) * ($ I) + 40;
# Echo $ x1 ."
";
$ Y1 = $ height-$ graphdata [$ I] * $ jc;
$ X2 = $ x1;
$ Y2 = $ y1 + $ graphdata [$ I] * $ jc;
# Echo $ y1 ."
";
Imagestring ($ image, $ font, $ x1, $ y1-2 * $ fontheight, $ graphdata [$ I]. "% (". $ data [$ I]. ")", $ text );
Imagearc ($ image, $ x1, $ y1, $ dot, $ dot, 0,360, $ dotcolor );
Imagefilltoborder ($ image, $ x1, $ y1, $ dotcolor, $ dotcolor );
Imagestring ($ image, $ font, $ x1, $ y2, $ label [$ I], $ text );
If ($ I> 0)
{
Imageline ($ image, $ tmpx1, $ tmpy1, $ x1, $ y1, $ line );
}
$ Tmpx1 = $ x1; $ tmpy1 = $ y1;
}
Imagegif ($ image, $ file );
}
?>