Code _php tutorial for implementing a line chart effect under PHP

Source: Internet
Author: User
Class imagereport{
var $X;//Picture size X-axis
var $Y;//Picture size Y-axis
var $R;//Background color R value
var $G;//... G.
var $B;//... B.
var $TRANSPARENT;//whether transparent 1 or 0
var $IMAGE;//Picture pair image
//-------------------
var $ARRAYSPLIT;//Specify a symbol to separate the values
var $ITEMARRAY;//value
var $REPORTTYPE;//Chart type, 1 for vertical column 2 for horizontal column 3 for fold line
var $BORDER;//Distance
//-------------------
var $FONTSIZE;//font size
var $FONTCOLOR;//Font Color
--------parameter setting function
function SetImage ($SizeX, $SizeY, $R, $G, $B, $Transparent) {
$this->x= $SizeX;
$this->y= $SizeY;
$this->r= $R;
$this->g= $G;
$this->b= $B;
$this->transparent= $Transparent;
}
function SetItem ($ArraySplit, $ItemArray, $ReportType, $Border) {
$this->arraysplit= $ArraySplit;
$this->itemarray= $ItemArray;
$this->reporttype= $ReportType;
$this->border= $Border;
}
function SetFont ($FontSize) {
$this->fontsize= $FontSize;
}
----------------Body
function PrintReport () {
Header ("Content-type:image/gif");
Build Canvas Size
$this->image=imagecreate ($this->x, $this->y);
Set the canvas background color
$background =imagecolorallocate ($this->image, $this->r, $this->g, $this->b);
if ($this->transparent== "1") {
Background transparent
Imagecolortransparent ($this->image, $background);
}else{
Fill the background color if you are not transparent
Imagefilledrectangle ($this->image,0,0, $this->x, $this->y, $background);
}
parameter font text small and color
$this->fontcolor=imagecolorallocate ($this->image,255-$this->r,255-$this->g,255-$this->b);
Switch ($this->reporttype) {
Case "0":
Break
Case "1":
$this->imagecolumns ();
Break
Case "2":
$this->IMAGECOLUMNH ();
Break
Case "3":
$this->imageline ();
Break
}
$this->printxy ();
$this->printall ();
}
-----------Print an XY axis
function Printxy () {
Draw XY Axis */
$color =imagecolorallocate ($this->image,255-$this->r,255-$this->g,255-$this->b);
$xx = $this->x/10;
$yy = $this->y-$this->y/10;
Imageline ($this->image, $this->border, $this->border, $this->border, $this->y-$this->border,$ color);//x axis
Imageline ($this->image, $this->border, $this->y-$this->border, $this->x-$this->border, $this- >y-$this->border, $color);//y axis
Scale on y-axis
$rulerY = $this->y-$this->border;
while ($rulerY > $this->border*2) {
$rulerY = $rulerY-$this->border;
Imageline ($this->image, $this->border, $rulerY, $this->border-2, $rulerY, $color);
}
Scale on X-axis
$rulerX = $rulerX + $this->border;
while ($rulerX < ($this->x-$this->border*2)) {
$rulerX = $rulerX + $this->border;
Imageline ($this->image, $this->border,10, $this->border+10,10, $color);
Imageline ($this->image, $rulerX, $this->y-$this->border, $rulerX, $this->y-$this->border+2, $color);
}
}

--------------Vertical Column Chart
function Imagecolumns () {
$item _array=split ($this->arraysplit, $this->itemarray);
$num =count ($item _array);
$item _max=0;
for ($i =0; $i < $num; $i + +) {
$item _max=max ($item _max, $item _array[$i]);
}
$xx = $this->border*2;
Draw a Column chart
for ($i =0; $i < $num; $i + +) {
Srand (Double) microtime () *1000000);
if ($this->r!=255 && $this->g!=255 && $this->b!=255) {
$R =rand ($this->r,200);
$G =rand ($this->g,200);
$B =rand ($this->b,200);
}else{
$R =rand (50,200);
$G =rand (50,200);
$B =rand (50,200);
}
$color =imagecolorallocate ($this->image, $R, $G, $B);
Column height
$height = ($this->y-$this->border)-($this->y-$this->border*2) * ($item _array[$i]/$item _max);
Imagefilledrectangle ($this->image, $xx, $height, $xx + $this->border, $this->y-$this->border, $color);
Imagestring ($this->image, $this->fontsize, $xx, $height-$this->border, $item _array[$i], $this- FontColor);
For interval
$xx = $xx + $this->border*2;
}
}

-----------Horizontal Column Chart
function IMAGECOLUMNH () {
$item _array=split ($this->arraysplit, $this->itemarray);
$num =count ($item _array);
$item _max=0;
for ($i =0; $i < $num; $i + +) {
$item _max=max ($item _max, $item _array[$i]);
}
$yy = $this->y-$this->border*2;
Draw a Column chart
for ($i =0; $i < $num; $i + +) {
Srand (Double) microtime () *1000000);
if ($this->r!=255 && $this->g!=255 && $this->b!=255) {
$R =rand ($this->r,200);
$G =rand ($this->g,200);
$B =rand ($this->b,200);
}else{
$R =rand (50,200);
$G =rand (50,200);
$B =rand (50,200);
}
$color =imagecolorallocate ($this->image, $R, $G, $B);
Cylindrical length
$leight = ($this->x-$this->border*2) * ($item _array[$i]/$item _max);
Imagefilledrectangle ($this->image, $this->border, $yy-$this->border, $leight, $yy, $color);
Imagestring ($this->image, $this->fontsize, $leight +2, $yy-$this->border, $item _array[$i], $this- FontColor);
For interval
$yy = $yy-$this->border*2;
}
}

--------------Line Chart
function Imageline () {
$item _array=split ($this->arraysplit, $this->itemarray);
$num =count ($item _array);
$item _max=0;
for ($i =0; $i < $num; $i + +) {
$item _max=max ($item _max, $item _array[$i]);
}
$xx = $this->border;
Draw a Column chart
for ($i =0; $i < $num; $i + +) {
Srand (Double) microtime () *1000000);
if ($this->r!=255 && $this->g!=255 && $this->b!=255) {
$R =rand ($this->r,200);
$G =rand ($this->g,200);
$B =rand ($this->b,200);
}else{
$R =rand (50,200);
$G =rand (50,200);
$B =rand (50,200);
}
$color =imagecolorallocate ($this->image, $R, $G, $B);
Column height
$height _now= ($this->y-$this->border)-($this->y-$this->border*2) * ($item _array[$i]/$item _max);
if ($i! = "0") {
Imageline ($this->image, $xx, $height _next, $xx + $this->border, $height _now, $color);
}
Imagestring ($this->image, $this->fontsize, $xx + $this->border, $height _now-$this->border/2, $item _array [$i], $this->fontcolor);
$height _next= $height _now;
For interval
$xx = $xx + $this->border;
}
}

--------------Finish Printing Graphics http://knowsky.com
function printall () {
Imagegif ($this->image);
Imagedestroy ($this->image);
}
--------------Debugging
function Debug () {
echo "X:". $this->x. "
Y: ". $this->y;
echo "
BORDER: ". $this->border;
$item _array=split ($this->arraysplit, $this->itemarray);
$num =count ($item _array);
echo "
Number of values: ". $num."
Value: ";
for ($i =0; $i < $num; $i + +) {
echo "
". $item _array[$i];
}
}
}

$report =new Imagereport;
$report->setimage (600,300,255,255,255,1);//parameter (long, wide, back color r,g,b, whether transparent 1 or 0)
$temparray = "50,25,100,250,180,200,150,220,200,150,50,25,100,250,180,200,150,220,200,150";//values, separated by specified symbols
$report->setitem (', ', $temparray, 3,20);//parameters (delimited value of the specified symbol, numeric variable, style 1 for the vertical column Figure 2 for the horizontal column Figure 3 is a line chart, distance)
$report->setfont (1);//font size 1-10
$report->printreport ();
$report->debug ();//mode of Use
?>

http://www.bkjia.com/PHPjc/318343.html www.bkjia.com true http://www.bkjia.com/PHPjc/318343.html techarticle ? php classimagereport{var$x;//picture size X axis var$y;//picture size Y axis var$r;//back color R value var$g;//... G. var$b;//... B. var$transparent;//is transparent 1 or 0 var$image;//picture to like ...

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