懶得詳細說明了，先上前端代碼：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>無標題文檔</title><style type="text/css">*{margin:0; padding:0;}#picDiv{width:703px; height:338px; background:#fff; border:1px solid #999; margin:100px auto; position:relative; overflow:hidden;}#picDiv ul{width:200px; height:200px; border:1px dashed #fff; cursor:move; list-style:none; position:relative; z-index:200;}#picDiv li{width:6px; height:6px; background:#fff; border:1px solid #333; margin:-4px 0 0 -4px; overflow:hidden; position:absolute; opacity:0.5; filter:alpha(opacity=50);}#picDiv li.tl{cursor:nw-resize; top:0%; left:0%;}#picDiv li.tc{cursor:n-resize; top:0%; left:50%;}#picDiv li.tr{cursor:ne-resize; top:0%; left:100%;}#picDiv li.ml{cursor:w-resize; top:50%; left:0%;}#picDiv li.mr{cursor:e-resize; top:50%; left:100%;}#picDiv li.fl{cursor:sw-resize; top:100%; left:0%;}#picDiv li.fc{cursor:s-resize; top:100%; left:50%;}#picDiv li.fr{cursor:se-resize; top:100%; left:100%;}</style></head><body><div id="picDiv"><ul> <li class="tl"></li> <li class="tc"></li> <li class="tr"></li> <li class="ml"></li> <li class="mr"></li> <li class="fl"></li> <li class="fc"></li> <li class="fr"></li> </ul> <img src="../images/2.jpg" style="position:absolute; top:0; left:0; opacity:0.3; filter:alpha(opacity=30); z-index:10;" /> <img src="../images/2.jpg" style="position:absolute; top:0; left:0; clip:rect(0 0 0 0); z-index:100;" /></div><form action="41.php" method="post"> <input type="submit" value=" 提 交 " /> <input type="hidden" id="imgInfor" name="imgInfor" /></form><script type="text/javascript">(function(){var div=document.getElementById('picDiv'),ul=div.getElementsByTagName('ul')[0],li=ul.getElementsByTagName('li');divW=div.offsetWidth-2,divH=div.offsetHeight-2,see=function(){var t=ul.offsetTop,l=ul.offsetLeft,r=l+ul.offsetWidth,f=t+ul.offsetHeight;div.getElementsByTagName('img')[1].style.clip='rect('+t+'px '+r+'px '+f+'px '+l+'px)';document.getElementById('imgInfor').value="{'x':'"+l+"','y':'"+t+"','w':'"+ul.offsetWidth+"','h':'"+ul.offsetHeight+"','url':'"+div.getElementsByTagName('img')[1].src+"'}";window.getSelection?window.getSelection().removeAllRanges():document.selection.empty();},clear=function(o){if(!-[1,]){o.setCapture();}//學增加丟失焦時間點事件document.onmouseup=function(){if(!-[1,]){o.releaseCapture();}document.onmousemove=null;document.onmouseup=null;};return false;//webkit中去掉預設事件,使滑鼠不會變成預設文本游標};if(!-[1,]){var cDiv=document.createElement('div');cDiv.style.cssText='width:100%; height:100%; background:#fff; opacity:0; filter:alpha(opacity=0); font-size:0;';ul.appendChild(cDiv);}ul.onmousedown=function(e){e=e||window.event;var oldX=e.clientX-ul.offsetLeft,oldY=e.clientY-ul.offsetTop,maxW=divW-ul.offsetWidth,maxH=divH-ul.offsetHeight;document.onmousemove=function(e){e=e||window.event;var newX=e.clientX-oldX,newY=e.clientY-oldY;newX=newX<0?0:newX>maxW?maxW:newX;newY=newY<0?0:newY>maxH?maxH:newY;ul.style.top=newY+'px';ul.style.left=newX+'px';see();};clear(this);};for(var i in li){li[i].onmousedown=function(e){e=e||window.event;var oldX=e.clientX,oldY=e.clientY,oldT=ul.offsetTop+2,oldL=ul.offsetLeft+2,oldW=ul.offsetWidth,oldH=ul.offsetHeight,minW=50,minH=50,_method=this;if(e.stopPropagation){e.stopPropagation();}else{e.cancelBubble=true;}document.onmousemove=function(e){e=e||window.event;var lis={'w':'tr,mr,fr','h':'fl,fc,fr','l':'tl,ml,fl','t':'tl,tc,tr'};if(lis.w.indexOf(_method.className)>-1){var w=e.clientX-oldX+oldW;w=w<minW?minW:w>divW-oldL?divW-oldL:w;ul.style.width=w+'px';}if(lis.h.indexOf(_method.className)>-1){var h=e.clientY-oldY+oldH;h=h<minH?minH:h>divH-oldT?divH-oldT:h;ul.style.height=h+'px';if(!-[1,]&&!window.XMLHttpRequest){cDiv.style.height=h+'px';}//ie6下高度不變bug}if(lis.l.indexOf(_method.className)>-1){var l=e.clientX-oldX+oldL;l=l<0?0:l>oldW+oldL-minW?oldW+oldL-minW:l;ul.style.left=l+'px';ul.style.width=oldW+oldL-l+'px';}if(lis.t.indexOf(_method.className)>-1){var t=e.clientY-oldY+oldT;t=t<0?0:t>oldH+oldT-minH?oldH+oldT-minH:t;ul.style.top=t+'px';ul.style.height=oldH+oldT-t+'px';if(!-[1,]&&!window.XMLHttpRequest){cDiv.style.height=oldH+oldT-t+'px';}//ie6下高度不變bug}see();};clear(this);};}see();})();</script></body></html>
這裡是php處理的代碼，具體圖片自己弄吧~哈哈~後期會出功能多一點的
<?php$img=json_decode(str_replace("\\'",'"',$_POST['imgInfor']),true);$old = imagecreatefromstring(file_get_contents($img['url']));if(function_exists("imagecreatetruecolor")){ $new=imagecreatetruecolor($img['w'],$img['h']); // 建立靶心圖表gd2}else{ $new=imagecreate($img['w'],$img['h']); // 建立靶心圖表gd1}imagecopyresampled ($new,$old,0,0,$img['x'],$img['y'],$img['w'],$img['h'],$img['w'],$img['h']);imagejpeg($new,'img\\'.getip().'_'.time().'.jpg');@header("Content-type: image/jpeg");imagejpeg($new);imagedestroy($new);function getip(){if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")){$ip = getenv("HTTP_CLIENT_IP");}else if(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")){$ip = getenv("HTTP_X_FORWARDED_FOR");}else if(getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")){$ip = getenv("REMOTE_ADDR");}else if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")){$ip = $_SERVER['REMOTE_ADDR'];}else{$ip = "unknown";}return ($ip);}?>
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