PHP调整Jcrop截取的上传头像功能

PHP整合Jcrop截取的上传头像功能

先来看看简单Demo效果图

Jcrop介绍

Jcrop是一个jQuery插件，它能为你的WEB应用程序快速简单地提供图片裁剪的功能。
特点：
1、对所有图片均unobtrusively（无侵入的，保持DOM简洁）
2、支持宽高比例锁定
3、支持 minSize / maxSize设置
4、支持改变选区或移 动选区时的回调（Callback）
5、支持用键盘微调选 区
6、通过API创建互 动，比如动画效果
7、支持CSS样式

详细请自行百度jcrop

Demo介绍

这个Demo选择整合了jcrop的截取图片插件，
上传图片还是使用file表单提交，php后台处理截图保存。

模块目录如下：
├─controller （控制器）
├─uppict （上传图片暂存位置）
├─userpic （截图保存位置）
└─views （视图）

视图代码croppic.php如下：

<code class=" hljs xml"><span class="php"><span class="hljs-preprocessor"><?php</span><span class="hljs-comment">/*** 20150520 11:50* 作者：Ro* 修改时间 20150522 13:50* 修改内容 合并上传和截取图片功能*/</span><span class="hljs-comment">//上传文件类型列表</span><span class="hljs-variable">$uptypes</span>=<span class="hljs-keyword">array</span>(    <span class="hljs-string">'image/jpg'</span>,    <span class="hljs-string">'image/jpeg'</span>,    <span class="hljs-string">'image/png'</span>    );<span class="hljs-preprocessor">?></span></span><span class="hljs-tag"><<span class="hljs-title">html</span>></span><span class="hljs-tag"><<span class="hljs-title">head</span>></span>    <span class="hljs-tag"><<span class="hljs-title">meta</span> <span class="hljs-attribute">http-equiv</span>=<span class="hljs-value">"Content-Type"</span> <span class="hljs-attribute">content</span>=<span class="hljs-value">"text/html; charset=utf-8"</span> /></span>    <span class="hljs-tag"><<span class="hljs-title">link</span> <span class="hljs-attribute">rel</span>=<span class="hljs-value">"stylesheet"</span> <span class="hljs-attribute">href</span>=<span class="hljs-value">"css/main.css"</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"text/css"</span> /></span>    <span class="hljs-tag"><<span class="hljs-title">link</span> <span class="hljs-attribute">rel</span>=<span class="hljs-value">"stylesheet"</span> <span class="hljs-attribute">href</span>=<span class="hljs-value">"css/demos.css"</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"text/css"</span> /></span>    <span class="hljs-tag"><<span class="hljs-title">link</span> <span class="hljs-attribute">rel</span>=<span class="hljs-value">"stylesheet"</span> <span class="hljs-attribute">href</span>=<span class="hljs-value">"css/jquery.Jcrop.css"</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"text/css"</span> /></span>    <span class="hljs-tag"><<span class="hljs-title">link</span> <span class="hljs-attribute">rel</span>=<span class="hljs-value">"stylesheet"</span> <span class="hljs-attribute">href</span>=<span class="hljs-value">"css/uppic.css"</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"text/css"</span> /></span>    <span class="hljs-tag"><<span class="hljs-title">title</span>></span>头像上传<span class="hljs-tag"></<span class="hljs-title">title</span>></span><span class="hljs-tag"></<span class="hljs-title">head</span>></span><span class="hljs-tag"><<span class="hljs-title">body</span>></span>    <span class="hljs-tag"><<span class="hljs-title">div</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"container"</span>></span>        <span class="hljs-tag"><<span class="hljs-title">div</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"row"</span>></span>            <span class="hljs-tag"><<span class="hljs-title">div</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"span12"</span>></span>                <span class="hljs-tag"><<span class="hljs-title">div</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"jc-demo-box"</span>></span>                    <span class="hljs-tag"><<span class="hljs-title">div</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"clear_float"</span>></span>                        <span class="php"><span class="hljs-preprocessor"><?php</span>                         <span class="hljs-keyword">if</span>(<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'name'</span>]))                        {                            <span class="hljs-keyword">echo</span><span class="hljs-string">'                            <img  class="float lazy"  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg" </span alt="PHP调整Jcrop截取的上传头像功能" >.<span>$_GET</span>[<span>'name'</span>].<span>'"  id="target"/>                            <img  class="float lazy"  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg" </span alt="PHP调整Jcrop截取的上传头像功能" >.<span>$_GET</span>[<span>'name'</span>].<span>'"  id="real_img"   style="max-width:90%"/>                            <div id="preview-pane">                                <div>                                    <img  class="float lazy"  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg" </span alt="PHP调整Jcrop截取的上传头像功能" >.<span>$_GET</span>[<span>'name'</span>].<span>'" alt="Preview" />                                </div>                            </div>                            '</span>;                        }                        <span>else</span>                        {                            <span>echo</span><span>'                            <img  class="float lazy"  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg"   id="target"/ alt="PHP调整Jcrop截取的上传头像功能" >                            <img  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg"  class="lazy"  id="real_img"   style="max-width:90%"/ alt="PHP调整Jcrop截取的上传头像功能" >                            <div id="preview-pane">                                <div class="preview-container">                                    <img class="jcrop-preview float lazy"  src="/static/imghw/default1.png"  data-src="/uppic/uppict/default.jpg"  alt="Preview" />                                </div>                            </div>                            '</span>;                        }                        <span class="hljs-preprocessor">?></span></span>                    <span class="hljs-tag"></<span class="hljs-title">div</span>></span>                    <span class="hljs-tag"><<span class="hljs-title">form</span> <span class="hljs-attribute">action</span>=<span class="hljs-value">"http://<?php echo $_SERVER['HTTP_HOST'];?>/uppic/controller/croppic.php?mothed=up"</span> <span class="hljs-attribute">enctype</span>=<span class="hljs-value">"multipart/form-data"</span> <span class="hljs-attribute">method</span>=<span class="hljs-value">"post"</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"upform"</span>></span>                        上传文件:                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"upfile"</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"file"</span>></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"submit"</span> <span class="hljs-attribute">value</span>=<span class="hljs-value">"上传图片"</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"btn btn-large btn-inverse"</span>></span><span class="hljs-tag"><<span class="hljs-title">br</span>></span>                        允许上传的文件类型为:<span class="php"><span class="hljs-preprocessor"><?</span>=implode(<span class="hljs-string">', '</span>,<span class="hljs-variable">$uptypes</span>)<span class="hljs-preprocessor">?></span></span>                    <span class="hljs-tag"></<span class="hljs-title">form</span>></span>                    <span class="php"><span class="hljs-preprocessor"><?php</span>                     <span class="hljs-keyword">if</span>(<span class="hljs-keyword">isset</span>(<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'name'</span>]))                    {                        <span class="hljs-keyword">echo</span> <span class="hljs-string">'                        <form action="http://'</span>.<span class="hljs-variable">$_SERVER</span>[<span class="hljs-string">'HTTP_HOST'</span>].<span class="hljs-string">'/uppic/controller/croppic.php?mothed=crop&name='</span>.<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'name'</span>].<span class="hljs-string">'" method="post" onsubmit="return checkCoords();">                        '</span>;                    }                    <span class="hljs-keyword">else</span>                    {                        <span class="hljs-keyword">echo</span> <span class="hljs-string">'                        <form action="http://'</span>.<span class="hljs-variable">$_SERVER</span>[<span class="hljs-string">'HTTP_HOST'</span>].<span class="hljs-string">'/uppic/controller/croppic.php?mothed=crop&name=default.jpg" method="post" onsubmit="return checkCoords();">                        '</span>;                    }                    <span class="hljs-preprocessor">?></span></span>                        <span class="hljs-comment"><!-- 记录截图坐标和宽高 --></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"hidden"</span> <span class="hljs-attribute">id</span>=<span class="hljs-value">"x"</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"x"</span> /></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"hidden"</span> <span class="hljs-attribute">id</span>=<span class="hljs-value">"y"</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"y"</span> /></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"hidden"</span> <span class="hljs-attribute">id</span>=<span class="hljs-value">"w"</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"w"</span> /></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"hidden"</span> <span class="hljs-attribute">id</span>=<span class="hljs-value">"h"</span> <span class="hljs-attribute">name</span>=<span class="hljs-value">"h"</span> /></span>                        <span class="hljs-tag"><<span class="hljs-title">input</span> <span class="hljs-attribute">type</span>=<span class="hljs-value">"submit"</span> <span class="hljs-attribute">value</span>=<span class="hljs-value">"保存"</span> <span class="hljs-attribute">class</span>=<span class="hljs-value">"btn btn-large btn-inverse"</span>/></span>                    <span class="hljs-tag"></<span class="hljs-title">form</span>></span>                <span class="hljs-tag"></<span class="hljs-title">div</span>></span>            <span class="hljs-tag"></<span class="hljs-title">div</span>></span>        <span class="hljs-tag"></<span class="hljs-title">div</span>></span>    <span class="hljs-tag"></<span class="hljs-title">div</span>></span><span class="hljs-tag"><<span class="hljs-title">script</span> <span class="hljs-attribute">src</span>=<span class="hljs-value">"js/jquery.min.js"</span>></span><span class="javascript"></span><span class="hljs-tag"></<span class="hljs-title">script</span>></span><span class="hljs-tag"><<span class="hljs-title">script</span> <span class="hljs-attribute">src</span>=<span class="hljs-value">"js/jquery.Jcrop.js"</span>></span><span class="javascript"></span><span class="hljs-tag"></<span class="hljs-title">script</span>></span><span class="hljs-tag"><<span class="hljs-title">script</span> <span class="hljs-attribute">src</span>=<span class="hljs-value">"js/crop.js"</span>></span><span class="javascript"></span><span class="hljs-tag"></<span class="hljs-title">script</span>></span><span class="hljs-tag"></<span class="hljs-title">body</span>></span><span class="hljs-tag"></<span class="hljs-title">html</span>></span></code>

视图js代码crop.js如下：

<code class=" hljs javascript"><span class="hljs-comment">/** * 20150518 15:35 * author : Ro * changeDate： 20150519 10:25 * changeContext：修改计算坐标算法 */</span><span class="hljs-comment">/***检测是否有选取一个区域**/</span><span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">checkCoords</span><span class="hljs-params">()</span>{</span>    <span class="hljs-keyword">if</span> (<span class="hljs-built_in">parseInt</span>($(<span class="hljs-string">'#w'</span>).val()))       <span class="hljs-keyword">return</span> <span class="hljs-literal">true</span>;    alert(<span class="hljs-string">"请截取一个区域再提交保存！"</span>);    <span class="hljs-keyword">return</span> <span class="hljs-literal">false</span>;};jQuery(<span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-params">($)</span>{</span>    <span class="hljs-keyword">var</span> jcrop_api,        boundx,        boundy,    <span class="hljs-comment">// Grab some information about the preview pane</span>    $preview = $(<span class="hljs-string">'#preview-pane'</span>),    $pcnt = $(<span class="hljs-string">'#preview-pane .preview-container'</span>),    $pimg = $(<span class="hljs-string">'#preview-pane .preview-container img'</span>),    <span class="hljs-comment">//这里获取的是装img的div宽高</span>    xsize = $pcnt.width(),    ysize = $pcnt.height();    <span class="hljs-comment">//这里可以设置jcrop的属性，</span>    <span class="hljs-comment">//如当改变截取区域时激活onChange: updatePreview动作等</span>    $(<span class="hljs-string">'#target'</span>).Jcrop({      onChange: updatePreview,      onSelect: updatePreview,      aspectRatio: xsize / ysize    },<span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-params">()</span>{</span>      <span class="hljs-comment">// 用jcrop的getBounds()方法获取真实尺寸</span>      <span class="hljs-keyword">var</span> bounds = <span class="hljs-keyword">this</span>.getBounds();      boundx = bounds[<span class="hljs-number">0</span>];      boundy = bounds[<span class="hljs-number">1</span>];      <span class="hljs-comment">// Store the API in the jcrop_api variable</span>      jcrop_api = <span class="hljs-keyword">this</span>;      <span class="hljs-comment">// Move the preview into the jcrop container for css positioning</span>      $preview.appendTo(jcrop_api.ui.holder);    });    <span class="hljs-comment">//更新jcrop预览视图</span>    <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">updatePreview</span><span class="hljs-params">(c)</span>    {</span>      <span class="hljs-keyword">if</span> (<span class="hljs-built_in">parseInt</span>(c.w) > <span class="hljs-number">0</span>)      {        <span class="hljs-comment">//下面的比例是div的宽高与截图坐标比</span>        <span class="hljs-keyword">var</span> rx = xsize / c.w;        <span class="hljs-keyword">var</span> ry = ysize / c.h;        <span class="hljs-comment">//改变预览图的大小和显示位置</span>        $pimg.css({          width: <span class="hljs-built_in">Math</span>.round(rx * boundx) + <span class="hljs-string">'px'</span>,          height: <span class="hljs-built_in">Math</span>.round(ry * boundy) + <span class="hljs-string">'px'</span>,          marginLeft: <span class="hljs-string">'-'</span> + <span class="hljs-built_in">Math</span>.round(rx * c.x) + <span class="hljs-string">'px'</span>,          marginTop: <span class="hljs-string">'-'</span> + <span class="hljs-built_in">Math</span>.round(ry * c.y) + <span class="hljs-string">'px'</span>        });        <span class="hljs-keyword">var</span> realWidth =  $(<span class="hljs-string">"#real_img"</span>).width();        <span class="hljs-keyword">var</span> realHeight = $(<span class="hljs-string">"#real_img"</span>).height();    <span class="hljs-comment">//记录位置和宽高</span>        $(<span class="hljs-string">'#x'</span>).val(<span class="hljs-built_in">Math</span>.round( c.x * realWidth / boundx ));        $(<span class="hljs-string">'#y'</span>).val(<span class="hljs-built_in">Math</span>.round( c.y * realHeight / boundy));        $(<span class="hljs-string">'#w'</span>).val(<span class="hljs-built_in">Math</span>.round( c.w * realWidth / boundx ));        $(<span class="hljs-string">'#h'</span>).val(<span class="hljs-built_in">Math</span>.round( c.w * realWidth / boundx ));      }    };});</code>

控制器代码croppic.php如下：

<code class=" hljs xml"><span class="php"><span class="hljs-comment"><span class="hljs-preprocessor"><?php</span>/** * 20150520 11:50 * 作者：Ro * 修改时间 20150522 13:50 * 修改内容 合并上传和截取图片功能 * 修改时间 20150527 15:23 * 修改内容 判断png和jpg而作对应操作 */</span><span class="hljs-comment">/******************************************************************************参数说明:$max_file_size  : 上传文件大小限制, 单位BYTE$destination_folder : 上传文件路径使用说明:1. 将PHP.INI文件里面的"extension=php_gd2.dll"一行前面的;号去掉,因为我们要用到GD库;2. 将extension_dir =改为你的php_gd2.dll所在目录;******************************************************************************/</span><span class="hljs-comment">//上传文件类型列表</span><span class="hljs-variable">$uptypes</span>=<span class="hljs-keyword">array</span>(    <span class="hljs-string">'image/jpg'</span>,    <span class="hljs-string">'image/jpeg'</span>,    <span class="hljs-string">'image/png'</span>    );<span class="hljs-comment">//上传文件大小限制, 单位BYTE</span><span class="hljs-variable">$max_file_size</span>=<span class="hljs-number">2000000</span>;     <span class="hljs-comment">//上传文件路径'../uppict/'</span><span class="hljs-variable">$destination_folder</span>=<span class="hljs-string">"../uppict/"</span>; <span class="hljs-comment">//请求上传图片操作</span><span class="hljs-keyword">if</span> (<span class="hljs-variable">$_SERVER</span>[<span class="hljs-string">'REQUEST_METHOD'</span>] == <span class="hljs-string">'POST'</span> && <span class="hljs-string">'up'</span>==<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'mothed'</span>]){    <span class="hljs-comment">//是否存在文件</span>    <span class="hljs-keyword">if</span> (!is_uploaded_file(<span class="hljs-variable">$_FILES</span>[<span class="hljs-string">"upfile"</span>][<span class="hljs-string">"tmp_name"</span>]))    {       <span class="hljs-keyword">echo</span> <span class="hljs-string">"图片不存在!"</span>;       <span class="hljs-keyword">exit</span>;   }   <span class="hljs-variable">$file</span> = <span class="hljs-variable">$_FILES</span>[<span class="hljs-string">"upfile"</span>];    <span class="hljs-comment">//检查文件大小</span>   <span class="hljs-keyword">if</span>(<span class="hljs-variable">$max_file_size</span> < <span class="hljs-variable">$file</span>[<span class="hljs-string">"size"</span>])   {    <span class="hljs-keyword">echo</span> <span class="hljs-string">"文件太大!"</span>;    <span class="hljs-keyword">exit</span>;}    <span class="hljs-comment">//检查文件类型</span><span class="hljs-keyword">if</span>(!in_array(<span class="hljs-variable">$file</span>[<span class="hljs-string">"type"</span>], <span class="hljs-variable">$uptypes</span>)){    <span class="hljs-keyword">echo</span> <span class="hljs-string">"文件类型不符!"</span>.<span class="hljs-variable">$file</span>[<span class="hljs-string">"type"</span>];    <span class="hljs-keyword">exit</span>;}<span class="hljs-keyword">if</span>(!file_exists(<span class="hljs-variable">$destination_folder</span>)){    mkdir(<span class="hljs-variable">$destination_folder</span>);}    <span class="hljs-comment">//获取信息</span><span class="hljs-variable">$filename</span>=<span class="hljs-variable">$file</span>[<span class="hljs-string">"tmp_name"</span>];<span class="hljs-variable">$image_size</span> = getimagesize(<span class="hljs-variable">$filename</span>);<span class="hljs-variable">$pinfo</span>=pathinfo(<span class="hljs-variable">$file</span>[<span class="hljs-string">"name"</span>]);<span class="hljs-variable">$ftype</span>=<span class="hljs-variable">$pinfo</span>[<span class="hljs-string">'extension'</span>];    <span class="hljs-comment">//可以在这修改上传后图片的名字，这里以time()为命名</span><span class="hljs-variable">$destination</span> = <span class="hljs-variable">$destination_folder</span>.time().<span class="hljs-string">"."</span>.<span class="hljs-variable">$ftype</span>;    <span class="hljs-comment">//检查是否已经存在同名文件</span><span class="hljs-keyword">if</span> (file_exists(<span class="hljs-variable">$destination</span>) && <span class="hljs-variable">$overwrite</span> != <span class="hljs-keyword">true</span>){    <span class="hljs-keyword">echo</span> <span class="hljs-string">"同名文件已经存在了"</span>;    <span class="hljs-keyword">exit</span>;}    <span class="hljs-comment">//上传图片操作</span><span class="hljs-keyword">if</span>(!move_uploaded_file (<span class="hljs-variable">$filename</span>, <span class="hljs-variable">$destination</span>)){    <span class="hljs-keyword">echo</span> <span class="hljs-string">"移动文件出错"</span>;    <span class="hljs-keyword">exit</span>;}    <span class="hljs-comment">//获取信息</span><span class="hljs-variable">$pinfo</span>=pathinfo(<span class="hljs-variable">$destination</span>);<span class="hljs-variable">$fname</span>=<span class="hljs-variable">$pinfo</span>[<span class="hljs-string">'basename'</span>];    <span class="hljs-comment">//重定向浏览器 </span>header(<span class="hljs-string">'Location: http://'</span>.<span class="hljs-variable">$_SERVER</span>[<span class="hljs-string">'HTTP_HOST'</span>].<span class="hljs-string">'/uppic/views/croppic.php?name='</span>.<span class="hljs-variable">$fname</span>);     <span class="hljs-comment">//确保重定向后，后续代码不会被执行 </span><span class="hljs-keyword">exit</span>;}<span class="hljs-comment">//请求截图保存操作</span><span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span> (<span class="hljs-variable">$_SERVER</span>[<span class="hljs-string">'REQUEST_METHOD'</span>] == <span class="hljs-string">'POST'</span> && <span class="hljs-string">'crop'</span>==<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'mothed'</span>]){    <span class="hljs-comment">//获取图片名</span>    <span class="hljs-variable">$name</span>=<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'name'</span>];    <span class="hljs-comment">//高宽</span>    <span class="hljs-variable">$targ_w</span> = <span class="hljs-variable">$targ_h</span> = <span class="hljs-number">150</span>;    <span class="hljs-comment">/**     *范围从 0（最差质量，文件更小）     *到 100（最佳质量，文件最大）。     *默认为 IJG 默认的质量值（大约 75）     */</span>    <span class="hljs-variable">$jpeg_quality</span> = <span class="hljs-number">90</span>;    <span class="hljs-comment">//图片暂放地址'../uppict/'</span>    <span class="hljs-variable">$src</span> = <span class="hljs-string">"../uppict/"</span>.<span class="hljs-variable">$_GET</span>[<span class="hljs-string">'name'</span>];    <span class="hljs-comment">//分开图片名和图片后缀</span>    <span class="hljs-variable">$arr_name</span> = explode ( <span class="hljs-string">"."</span>, <span class="hljs-variable">$name</span> );    <span class="hljs-comment">//判断图片后缀选择新建图片方式</span>    <span class="hljs-variable">$img_r</span> =<span class="hljs-string">''</span>;    <span class="hljs-keyword">if</span> (<span class="hljs-string">'png'</span> == <span class="hljs-variable">$arr_name</span> [<span class="hljs-number">1</span>])    {        <span class="hljs-variable">$img_r</span> = imagecreatefrompng ( <span class="hljs-variable">$src</span> );    } <span class="hljs-keyword">else</span>    {        <span class="hljs-variable">$img_r</span> = imagecreatefromjpeg ( <span class="hljs-variable">$src</span> );    }    <span class="hljs-variable">$dst_r</span> = ImageCreateTrueColor( <span class="hljs-variable">$targ_w</span>, <span class="hljs-variable">$targ_h</span> );    <span class="hljs-comment">//截取图片</span>    imagecopyresampled(<span class="hljs-variable">$dst_r</span>,<span class="hljs-variable">$img_r</span>,<span class="hljs-number">0</span>,<span class="hljs-number">0</span>,<span class="hljs-variable">$_POST</span>[<span class="hljs-string">'x'</span>],<span class="hljs-variable">$_POST</span>[<span class="hljs-string">'y'</span>],<span class="hljs-variable">$targ_w</span>,<span class="hljs-variable">$targ_h</span>,<span class="hljs-variable">$_POST</span>[<span class="hljs-string">'w'</span>],<span class="hljs-variable">$_POST</span>[<span class="hljs-string">'h'</span>]);    <span class="hljs-comment">//判断图片后缀选择生成图片</span>    <span class="hljs-comment">//保存位置'../userpic/'// 生成图片</span>    <span class="hljs-keyword">if</span> (<span class="hljs-string">'png'</span> == <span class="hljs-variable">$arr_name</span> [<span class="hljs-number">1</span>])    {        imagepng ( <span class="hljs-variable">$dst_r</span>, <span class="hljs-string">'../userpic/'</span> . <span class="hljs-variable">$name</span> );    } <span class="hljs-keyword">else</span>    {        imagejpeg ( <span class="hljs-variable">$dst_r</span>, <span class="hljs-string">'../userpic/'</span> . <span class="hljs-variable">$name</span>, <span class="hljs-variable">$jpeg_quality</span> );    }    <span class="hljs-comment">//显示保存后的图片</span>    <span class="hljs-keyword">echo</span> <span class="hljs-string">'<img  src="../userpic/'</span alt="PHP调整Jcrop截取的上传头像功能" >.<span class="hljs-variable">$name</span>.<span class="hljs-string">'" />'</span>;    <span class="hljs-keyword">exit</span>;}<span class="hljs-preprocessor">?></span></span></code>