php+ajax剪切图片

<style>
#image{background-image:url(test1.jpg);width:1000px;height:200px;border:1px solid #000}
/*绝对定位很重要*/
#helper{position:absolute;width:100px;height:100px;border:1px solid #a9b53f;cursor:pointer;display:none;background-color:#999;top:30px;left:30px}
</style>
<script>
//目标源
var target;
//拖拽辅助容器
var helper;
//鼠标默认状态（false=没有按下）
var iMouseDown=false;
//当前的目标源
var ctar;
//鼠标偏移量
var mouseOff;
//ajax相关
var ajax;
//继承number类的NANA0，用途为：如果一个数为100px会返回100。
Number.prototype.NaN0=function(){return isNaN(this)?0:this;}
//初始化AJAX
function createRequest(){
var ajax;
if(window.ActiveXObject){
  try{
   ajax = new ActiveXObject("Microsoft.XMLHTTP");
  }catch(e){
   ajax = false;
  }
}else{
  try{
   ajax = new XMLHttpRequest();
  }catch(e){
   ajax = false;
  }
}
if(!ajax){
  alert("Error creating the XMLHttpRequest object.");
}else{
  return ajax;
}
}
//反送AJAX请求
function cutp(cutC){
ajax=createRequest();
ajax.onreadystatechange = action;
//发送请求的URL
url = "path=./test1.jpg&x="+parseInt(cutC.style.left)+"&y="+parseInt(cutC.style.top)+"&width="+parseInt(cutC.offsetWidth)+"&height="+parseInt
(cutC.offsetHeight);
window.status = url;
ajax.open("GET", "image.php?"+url, true);
ajax.send(null);
}
function action(){
var show = document.getElementById("show");
//如果SHOW这个容器原先有子节点，就清楚子节点
if(show.hasChildNodes()){
  show.removeChild(show.childNodes[0]);
}
//状态为4&200的时候返回信息
if(ajax.readyState==4&&ajax.status==200){
  show.innerHTML = ajax.responseText;
}
}
//创建可拖拽容器
function createContainer(arg){
helper = document.getElementById('helper');
//设置属性
helper.setAttribute("cut",1);
arg.onmouseover = function(){
  helper.style.display="block";
}
arg.onmouseout = function(){
  helper.style.display="none";
}
helper.ondblclick = function(){
  cutp(helper);
}
}
//获取鼠标位置
function mouseCoords(ev){
if(ev.pageX || ev.pageY){
  return {x:ev.pageX, y:ev.pageY};
}
return {
  x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
  y:ev.clientY + document.body.scrollTop  - document.body.clientTop
};
}

//获取鼠标在当前容器的偏移量
function getMouseOffset(target, ev){
ev = ev || window.event;
var docPos    = getPosition(target);
var mousePos  = mouseCoords(ev);
return {x:mousePos.x - docPos.x, y:mousePos.y - docPos.y};
}
//获取鼠标相对父节点的偏移量
function getPosition(e){
var left = 0;
var top  = 0;
while (e.offsetParent){
  left += e.offsetLeft + (e.currentStyle?(parseInt(e.currentStyle.borderLeftWidth)).NaN0():0);
  top  += e.offsetTop  + (e.currentStyle?(parseInt(e.currentStyle.borderTopWidth)).NaN0():0);
  e     = e.offsetParent;
}
left += e.offsetLeft + (e.currentStyle?(parseInt(e.currentStyle.borderLeftWidth)).NaN0():0);
top  += e.offsetTop  + (e.currentStyle?(parseInt(e.currentStyle.borderTopWidth)).NaN0():0);
return {x:left, y:top};
}
//鼠标移动处罚的函数
function mouseMove(ev){
ev = ev||window.event;
var tar = ev.target||ev.srcElement;
var mousePos = mouseCoords(ev);
var rootar = tar.parentNode;
var mouseOf = getPosition(rootar);
//判断状态
if(iMouseDown&&mouseOff){
  var limLefX=mouseOf.x+rootar.offsetWidth-tar.offsetWidth;
  var limBottomY =mouseOf.y+rootar.offsetHeight-tar.offsetHeight;
  var conLeft = mousePos.x-mouseOff.x;
  var conTop = mousePos.y-mouseOff.y;
  if(conLeft>=mouseOf.x&&conLeft<=limLefX){
   helper.style.left = mousePos.x-mouseOff.x;
  }
  if(conTop>=mouseOf.y&&conTop<=limBottomY){
   helper.style.top = mousePos.y-mouseOff.y;
  }
}
}

//鼠标按键起来的函数
function mouseUp(){
iMouseDown = false;
}

//按下鼠标按键的函数
function mouseDown(ev){
iMouseDown = true;
ev = ev||window.event;
var tar = ev.target||ev.srcElement;
if(tar.getAttribute("cut")){
  var hmouseOff = getPosition(tar);
  helper.style.left = hmouseOff.x;
  helper.style.top = hmouseOff.y;
  mouseOff = getMouseOffset(tar,ev);
}
}
//监听事件
document.onmouseup = mouseUp;
document.onmousemove = mouseMove;
document.onmousedown = mouseDown;
window.onload=function(){
target = document.getElementById("image");
createContainer(target);
}
</script>
<div id="image" class="im"><div id="helper" class="drag">#dragHelper</div></div>
<div id="show"></div>

<?php

class ZipAllFloder{
    var $cachelist = array();
    var $datasec      = array();  
    var $ctrl_dir     = array();  
    var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";  
    var $old_offset   = 0;  
    
    function StartWork($dir){
        $result = $this->GetList($dir);
        $this->ClearCache();
        return $result;
    } 
    function ReadAndExport($filelist,$zipfilename){  
        if (count($filelist)>0){  
            foreach($filelist as $filename){  
                if (is_file($filename)){  
                    $fp = fopen ($filename, "r");  
                    $content = @fread ($fp,filesize($filename));  
                    fclose ($fp);  
                    $filename = basename($filename);  
                    $this -> addFile($content, $filename);  
                }  
            }  
        }else{
            $this -> addFile("This folder have none a single file!","nofile.log");
        }
        $out = $this -> outfile(); 
        $this -> IniVars();
        $fp = fopen($zipfilename,"w");  
        fwrite($fp,$out,strlen($out));  
        fclose($fp);
        $this -> cachelist[] = $zipfilename; 
    }
    function GetList($dir){  
        if (file_exists($dir)){  
            $handle = opendir($dir); 
            while($files = readdir($handle)){  
                if (($files==".")||($files=="..")) continue; 
                if(is_dir($dir."/".$files)){
                    $this -> GetList($dir."/".$files);
                }else{
                    $filelist[] = $dir."/".$files; 
                } 
            }  
            closedir($handle);
            $zipfilename = dirname($dir)."/[FOLDER]".basename($dir).".zip";
            $this -> ReadAndExport($filelist,$zipfilename);
        }  
        return $zipfilename;  
    }  
    function ClearCache(){
        if($num = count($this ->cachelist)){
            for($i=0;$i<$num-1;$i++){
                @unlink($this ->cachelist[$i]);
            }
        }
    }
    function IniVars(){
        $this -> datasec = array();
        $this -> ctrl_dir = array();
        $this -> eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
        $this -> old_offset   = 0;
    }
    function unix2DosTime($unixtime = 0) {  
        $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);  
        if ($timearray['year'] < 1980) {  
            $timearray['year']    = 1980;  
            $timearray['mon']     = 1;  
            $timearray['mday']    = 1;  
            $timearray['hours']   = 0;  
            $timearray['minutes'] = 0;  
            $timearray['seconds'] = 0;  
        }
        return (($timearray['year']-1980)<<25)|($timearray['mon']<<21)|($timearray['mday']<<16)|($timearray['hours']<<11)|($timearray['minutes']<<5)|($timearray['seconds']>>1);  
    }
    function addFile($data, $name, $time = 0){  
        $name = str_replace('\\', '/', $name);  
        $dtime = dechex($this->unix2DosTime($time));  
        $hexdtime = '\x' . $dtime[6] . $dtime[7]  
                  . '\x' . $dtime[4] . $dtime[5]  
                  . '\x' . $dtime[2] . $dtime[3]  
                  . '\x' . $dtime[0] . $dtime[1];  
        eval('$hexdtime = "' . $hexdtime . '";');  
        $fr   = "\x50\x4b\x03\x04";  
        $fr   .= "\x14\x00";
        $fr   .= "\x00\x00";
        $fr   .= "\x08\x00";
        $fr   .= $hexdtime; 
        $unc_len = strlen($data);  
        $crc     = crc32($data);  
        $zdata   = gzcompress($data);  
        $c_len   = strlen($zdata);  
        $zdata   = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
        $fr      .= pack('V', $crc);
        $fr      .= pack('V', $c_len);
        $fr      .= pack('V', $unc_len);
        $fr      .= pack('v', strlen($name));
        $fr      .= pack('v', 0);
        $fr      .= $name;  
        $fr .= $zdata;  
        $fr .= pack('V', $crc);
        $fr .= pack('V', $c_len);
        $fr .= pack('V', $unc_len);
        $this -> datasec[] = $fr;  
        $new_offset        = strlen(implode('', $this->datasec));  
        $cdrec = "\x50\x4b\x01\x02";  
        $cdrec .= "\x00\x00";
        $cdrec .= "\x14\x00";
        $cdrec .= "\x00\x00";
        $cdrec .= "\x08\x00";
        $cdrec .= $hexdtime;
        $cdrec .= pack('V', $crc);
        $cdrec .= pack('V', $c_len);
        $cdrec .= pack('V', $unc_len);
        $cdrec .= pack('v', strlen($name) );
        $cdrec .= pack('v', 0 );
        $cdrec .= pack('v', 0 );
        $cdrec .= pack('v', 0 );
        $cdrec .= pack('v', 0 );
        $cdrec .= pack('V', 32 );
        $cdrec .= pack('V', $this -> old_offset );
        $this -> old_offset = $new_offset;  
        $cdrec .= $name;  
        $this -> ctrl_dir[] = $cdrec;  
    }
    function outfile(){  
        $data    = implode('', $this -> datasec);  
        $ctrldir = implode('', $this -> ctrl_dir);  
        return  
            $data .  
            $ctrldir .  
            $this -> eof_ctrl_dir .  
            pack('v', sizeof($this -> ctrl_dir)) .
            pack('v', sizeof($this -> ctrl_dir)) .
            pack('V', strlen($ctrldir)) .
            pack('V', strlen($data)) .
            "\x00\x00";
    }
}

$zip = new ZipAllFloder();
$str = $zip->StartWork("./baby");
echo $str;
?>

先来看看效果图吧:

下面我们来看看php怎么样实现绘图这个功能的.

<?php
/***
  * @project Bar Graph Program
  * @license GPL
  * @package
  * @file GrapBar.php
  * @date 2007-4-3
  * @version 1.0
  * @last modified
 
  * 定义 柱状图（柱形图） 类
  *
  * 注意，使用前请确保字体路径存在并允许访问，如果出错，还要检查在php.ini配置中的open_basedir项，如果没此路径请添加，或在程序中设置包含
  *
  * 智能化的柱状图程序，用于报表等
  *
  ***/
 
define("DEFAULT_FONT_PATH", "c:/windows/fonts/simhei.ttf");
class SingleBar
{
 private $_x;
 private $_y;
 private $_h;
 public $_l = 50;
 private $_w = null;
 private $_srcPoints = array();
 private $_points = array();
 
 public function __construct($x, $y, $h, $l = 50, $w = null)
 {
  $this->_x = $x;
  $this->_y = $y;
  $this->_h = $h;
  $this->_l = $l;
  $this->_w = $w;
  $this->_srcPoints = $this->getSrcPoints();
  $this->_points = $this->getPoints();
 }
 
 public function getSrcPoints()
 {
  return array(
   array($this->_x                 , $this->_y),
   array($this->_x+$this->_l       , $this->_y),
   array($this->_x+(1.35*$this->_l), $this->_y-(0.35*$this->_l)),
   array($this->_x+(0.35*$this->_l), $this->_y-(0.35*$this->_l)),
   array($this->_x                 , $this->_y+$this->_h),
   array($this->_x+$this->_l       , $this->_y+$this->_h),
   array($this->_x+(1.35*$this->_l), $this->_y+$this->_h-(0.35*$this->_l))
  );
 }
 
 public function getPoints()
 {
  $points = array();
  foreach($this->_srcPoints as $key => $val)
  {
   $points[] = $val[0];
   $points[] = $val[1];
  }
  return $points;
 }
 
 public function getTopPoints()
 {
  return array_slice($this->_points, 0, 8); //顶坐标
 }
 
 public function getBelowPoints()
 {
  return array_merge(array_slice($this->_points, 0, 2), array_slice($this->_points, 8, 4), array_slice($this->_points, 2, 2)); //下坐标
 }
 
 public function getRightSidePoints()
 {
  return array_merge(array_slice($this->_points, 2, 2), array_slice($this->_points, 10, 4), array_slice($this->_points, 4, 2)); //右侧坐标
 }
 
 public function draw($image, $topColor, $belowColor, $sideColor, $borderColor = null, $type = 'LEFT')
 {
  if (is_null($borderColor))
  {
   $borderColor = 0xcccccc;
  }
  
  $top_rgb = $this->getRGB($topColor);
  $below_rgb = $this->getRGB($belowColor);
  $side_rgb = $this->getRGB($sideColor);
  $top_color = imagecolorallocate($image, $top_rgb['R'], $top_rgb['G'], $top_rgb['B']);
  $below_color = imagecolorallocate($image, $below_rgb['R'], $below_rgb['G'], $below_rgb['B']);
  $side_color = imagecolorallocate($image, $side_rgb['R'], $side_rgb['G'], $side_rgb['B']);
  
  imagefilledpolygon($image, $this->getTopPoints(), 4, $top_color); //画顶面
  imagepolygon($image, $this->getTopPoints(), 4, $borderColor); //画顶面边线
  
  imagefilledpolygon($image, $this->getBelowPoints(), 4, $below_color); //画下面
  imagepolygon($image, $this->getBelowPoints(), 4, $borderColor); //画下面边线
  
  if ($type == 'LEFT')
  {
   imagefilledpolygon($image, $this->getRightSidePoints(), 4, $side_color); //画右侧面
   imagepolygon($image, $this->getRightSidePoints(), 4, $borderColor); //画侧面边线
  } 
 }
 
 public function getRGB($color)
 {
  $ar = array();
  $color = hexdec($color);
  $ar['R'] = ($color>>16) & 0xff;
  $ar['G'] = ($color>>8) & 0xff;
  $ar['B'] = ($color) & 0xff;
  return $ar;
 }
}

class Bar
{
 private $_W;
 private $_H;
 private $_bgColor = "ffffff";
 private $_barHeights = array();
 private $_barTexts = array();
 private $_barColors = array();
 public $_title;
 public $_paddingTop = 30;
 public $_paddingBottom = 100;
 public $_paddingLeft = 45;
 public $_paddingRight = 2;
 public $_barL = 50;
 public $image;
 
 public function __construct($imgW, $imgH, $barHeights, $barTexts = null, $barColors = null)
 {
  $this->_W = $imgW;
  $this->_H = $imgH;
  $this->_barHeights = $barHeights;
  $this->_barTexts   = $barTexts;
  $this->_barColors  = $barColors;
  $this->_paddingBottom = $this->resetPaddingBottom();
  $this->_H = $this->resetHeight();
  $this->image = imagecreatetruecolor($this->_W, $this->_H);
 }
 
 public function stroke()
 {
  $this->drawBg();
  $this->drawBars();
  $this->drawTitle();
  $this->drawLables();
  ob_start();
  //header("Content-type: image/png");
  //imagepng($this->image);
  header("Content-type: " . image_type_to_mime_type(IMAGETYPE_JPEG));
        imagejpeg($this->image);
  imagedestroy($this->image);
 }
 
 public function drawBg()
 {
  $img_w = $this->_W;
  $img_h = $this->_H;
  $paddingTop    = $this->_paddingTop;
  $paddingBottom = $this->_paddingBottom;
  $paddingLeft   = $this->_paddingLeft;
  $paddingRight  = $this->_paddingRight;
  $rgb = $this->getRGB($this->_bgColor);
  $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);
  imagefilledrectangle($this->image, 0, 0, $img_w, $img_h, $bg);
  $side_bg = imagecolorallocatealpha($this->image, 220, 220, 220, 75);
  $side_bg2 = imagecolorallocate($this->image, 220, 220, 220);
  $border_color = imagecolorallocate($this->image, 190, 190, 190);
  $line_color = imagecolorallocate($this->image, 236, 236, 236);
  $dial_color = imagecolorallocate($this->image, 131, 131, 131);
  
  $x1 = $paddingLeft;
  $y1 = $paddingTop;
  $x2 = $img_w - $paddingRight;
  $y2 = $img_h - $paddingBottom;
  imagerectangle($this->image, $x1, $y1, $x2, $y2, $border_color);
  imagefilledpolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10,  $x1,$y2,  $x1,$y1), 4, $side_bg);
        imagepolygon($this->image, array($x1-5,$y1+10, $x1-5,$y2+10,  $x1,$y2,  $x1,$y1), 4, $border_color);
  imagefilledpolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10,  $x2,$y2,  $x1,$y2), 4, $side_bg);
        imagepolygon($this->image, array($x1-5,$y2+10, $x2-5,$y2+10,  $x2,$y2,  $x1,$y2), 4, $border_color);
  imageline($this->image, $x1, $y2, $x2, $y2, $side_bg2);
  
  $total_h = $img_h - $paddingTop - $paddingBottom;
  $every_h = $total_h/11;
  for($i=1; $i<=10; $i++)
  {
   imageline($this->image, $x1, $y1+($every_h*$i), $x2, $y1+($every_h*$i), $line_color); //画网线
  }
  
  $max_h = max($this->_barHeights);
  for($i=1; $i<=10; $i++)
  {
   $value = $max_h - (($max_h/10)*($i-1));
   $value = strval($value);
   $str_w = strlen($value)*5;
   imageline($this->image, $x1-5-3, $y1+10+($every_h*$i), $x1-3+1, $y1+10+($every_h*$i), $dial_color); //画刻度线
   imagestring($this->image, 3, $x1-5-3-$str_w-1, $y1+10+($every_h*$i)-5, $value, 0x000000);
  }
 }
 
 
 public function drawBars()
 {
  $counts = count($this->_barHeights);
  if (empty($this->_barColors))
  {
   $color = $this->setColor();
   $this->_barColors = array_slice($color, 0, $counts);
   //shuffle($this->_barColors);
  }
  $every_w = ($this->_W - $this->_paddingLeft - $this->_paddingRight)/$counts; //每一段宽
  $barL = $every_w;
  $barL = ($barL > $this->_barL*1.35+6) ? $this->_barL : $barL/1.35 - 6;
  $max_h = max($this->_barHeights);
  $ruler_h = $this->_H - $this->_paddingTop - $this->_paddingBottom; //标尺总高度
  $stander_h = $ruler_h - ($ruler_h/11); //标尺10等分的高度
  $i = 0;
  foreach ($this->_barHeights as $val)
  {
   $h = ($stander_h/$max_h)*$val;
   $x = $this->_paddingLeft + ($every_w*$i) + (($every_w - ($barL*1.35))/2);;
   $y = $this->_H - $this->_paddingBottom + 10 - $h;
   //$t_color = $this->_barColors[$i];
   $b_color = $this->_barColors[$i];
   //$s_color = $this->_barColors[$i];

   
   $rgb = $this->getRGB($this->_barColors[$i]);
   $R = $rgb['R'] * 0.7;
   $G = $rgb['G'] * 0.7;
   $B = $rgb['B'] * 0.7;
   
   $c1 = $R > 0 ? dechex($R) : '00';
   $c2 = $G > 0 ? dechex($G) : '00';
   $c3 = $B > 0 ? dechex($B) : '00';

   $t_color = $b_color;
   $s_color = $c1. $c2 . $c3;

   $SingleBar = new SingleBar($x, $y, $h, $barL);
   $SingleBar->draw($this->image, $t_color, $b_color, $s_color);
   $i++;
  }
 }
 
 public function drawTitle()
 {
  if (empty($this->_title))
  {
   return;
  }
  $font = 5;
  $font_w = imagefontwidth($font);
  $len = strlen($this->_title);
  $x = ($this->_W + $this->_paddingLeft - $this->_paddingRight)/2;
  $x -= ($len*$font_w)/2;
  $y = ($this->_paddingTop - $font_w)/2 + 12;
  //imagestring($this->image, $font, $x, $y, $title, 0x000000);
  imagettftext($this->image, 12, 0, $x, $y, 0x000000, DEFAULT_FONT_PATH, $this->_title);
 }
 
 public function drawLables()
 {
  $x1 = $this->_paddingLeft - 5;
  $y1 = $this->_H - $this->_paddingBottom + 20;
  $x2 = $this->_W - $this->_paddingRight;
  $y2 = $this->_H - 10;
  //imagefilledrectangle($this->image, $x1, $y1, $x2, $y2, 0xffffff);
  imagerectangle($this->image, $x1, $y1, $x2, $y2, 0x000000);
  $space = 5;
  $x = $x1 + 3;
  $y = $y1 + 3;
  foreach ($this->_barTexts as $key => $val)
  {
   $color = $this->_barColors[$key];
   $rgb = $this->getRGB($color);
   $bg = imagecolorallocate($this->image,$rgb['R'], $rgb['G'], $rgb['B']);
   imagefilledrectangle($this->image, $x, $y, $x+12, $y+12, $bg); //绘12*12的矩形
         imagerectangle($this->image, $x, $y, $x+12, $y+12, 0x000000); //绘12*12的矩形框
   imagettftext($this->image, 12, 0, $x+12+3, $y+12, 0x000000, DEFAULT_FONT_PATH, $val);
   $x += 12 + $space + (strlen($val)*8) + $space;
   if ($x + (strlen($val)*8) >= $this->_W - $this->_paddingLeft - $this->_paddingRight)
   {
    $x = $x1 + 3;
    $y = $y + 12 + 3;
   }
  }
 }
 
 public function resetPaddingBottom()
 {
  $ruler_w = $this->_W - $this->_paddingLeft - $this->_paddingRight;
  $label_w = $this->getLableTotalWidth();
  $lines = ceil($label_w / $ruler_w);
  $h = 12 * $lines + (3 * ($lines + 1)) + 30;
  return $h;
 }
 
 public function resetHeight()
 {
  $padding_bottom = $this->resetPaddingBottom();
  if ($this->_H - $padding_bottom < 222)
  {
   return 222 + $padding_bottom;
  }
  return $this->_H;
 }

 
 public function getLableTotalWidth()
 {
  $counts = count($this->_barTexts);
  $space = 5;
  $total_len = 0;
  foreach ($this->_barTexts as $val)
  {
   $total_len += strlen($val);
  }
  
  $tx_w = ($total_len * 9) + ((12 + 3 + $space) * $counts);
  return $tx_w;
 }
 
 public function setBg($color)
 {
  $this->_bgColor = $color;
 }
 
 public function setTitle($title)
 {
  $this->_title = $title;
 }
 
 public function setColor()
 {
  $ar = array('ff', '00', '33', '66', '99', 'cc');
  $color = array();
  for ($i=0; $i<6; $i++)
  {
   for ($j=0; $j<6; $j++)
   {
    for($k=0; $k<6; $k++)
    {
     $color[] = $ar[$i] . $ar[$j] . $ar[$k];
    }
   }
  }
  
  $color2 = array();
  for ($i=1; $i<216; $i += 4)
  {
   $color2[] = $color[$i];
  }

  return $color2;
 }
 
 public function getRGB($color)
 {
  $ar = array();
  $color = hexdec($color);
  $ar['R'] = ($color>>16) & 0xff;
  $ar['G'] = ($color>>8) & 0xff;
  $ar['B'] = ($color) & 0xff;
  return $ar;
 }
}

/***/
$bar = new Bar(500, 300, array(600, 300, 30, 500, 400, 250, 350, 360), array('AAAAA', 'BBBBB', 'CCCCC', 'DDDDD', 'EEEEEE', 'FFFFFF', 'GGGGGGG', 'HHHHHHHHH'));
$bar->setTitle('打造完美柱状图!');
$bar->stroke();
/***/
?>

<?php
# Constants
define("IMAGE_BASE", './');
define("MAX_WIDTH", 150);
define("MAX_HEIGHT", 150);

# Get image locationstr_replace('..', '', $_SERVER['QUERY_STRING']);
$image_file = 't.jpg';
$image_path = IMAGE_BASE . "$image_file";

# Load image
$img = null;
$ext = strtolower(end(explode('.', $image_path)));
if ($ext == 'jpg' || $ext == 'jpeg') {
     $img = imagecreatefromjpeg($image_path);
} else if ($ext == 'png') {
     $img = @imagecreatefrompng($image_path);
# Only if your version of GD includes GIF support
} else if ($ext == 'gif') {
     $img = @imagecreatefrompng($image_path);
}

# If an image was successfully loaded, test the image for size
if ($img) {

     # Get image size and scale ratio
     $width = imagesx($img);
     $height = imagesy($img);
     $scale = min(MAX_WIDTH/$width, MAX_HEIGHT/$height);

     # If the image is larger than the max shrink it
     if ($scale < 1) {
         $new_width =150; //floor($scale*$width);
         $new_height =150;// floor($scale*$height);

         # Create a new temporary image
         $tmp_img = imagecreatetruecolor($new_width, $new_height);

         # Copy and resize old image into new image
         imagecopyresized($tmp_img, $img, 0, 0, 0, 0,$new_width, $new_height, $width, $height);
         imagedestroy($img);
         $img = $tmp_img;
     }
}

# Create error image if necessary
if (!$img) {
     $img = imagecreate(MAX_WIDTH, MAX_HEIGHT);
     imagecolorallocate($img,0,0,0);
     $c = imagecolorallocate($img,70,70,70 );
     imageline($img,0,0,MAX_WIDTH,MAX_HEIGHT,$c2);
     imageline($img,MAX_WIDTH,0,0,MAX_HEIGHT,$c2);
}

# Display the image
header("Content-type: image/jpeg");
imagejpeg($img);
imagedestroy($img);
?>

以前在奥索看见过很多这样的例子，各各方法复杂，请看如下例子实现图形计数器。在网页中使用请用 <script src="http://文件地址"></script>

<?
//存放计数的文本文件
$count="count.txt";
//计数器的位数，假如不填则默认为6位
$wei="";
//图像的URL路径
$tu="/tcount/images";
?>
<?
if ($wei=="") { $wei=6; }
if (!file_exists($count)) { $fp=fopen($count,"w "); fputs($fp,0,100); fclose($fp); }
if ($REMOTE_ADDR!=$ip) {
$fp=fopen($count,"r ");
$cc=fgets($fp,100);
$cc=trim($cc);
if ($cc=="") { $cou=1; }
else { $cou=$cc 1; }
rewind($fp);
fputs($fp,$cou,100);
fclose($fp);
}
setcookie("ip",$REMOTE_ADDR,time() 86400);
$fp=fopen($count,"r ");
$cou=fgets($fp,100);
$cou=trim($cou);
fclose($fp);
$w=strlen($cou);
while($w<$wei) {
$cou="0".$cou;
$w ;
}
$www=strlen($cou);
$i=0;
echo "document.write("<p align=center>");n";
while($i<$www) {
$ym=substr($cou,$i,1);
echo "document.write("<img src=$tu/$ym.gif>");n";
$i ;
}
?>