The code structure is as follows:
1. HTML code, no need to explain.
<span> 1</span><span><!</span><span>DOCTYPE html</span><span>></span><span> 2</span><span><</span><span>html</span><span>></span><span> 3</span><span><</span><span>head</span><span>></span><span> 4</span><span><</span><span>meta </span><span>charset</span><span>="UTF-8"</span><span>></span><span> 5</span><span><</span><span>title</span><span>></span>文件上传<span></</span><span>title</span><span>></span><span> 6</span><span><</span><span>script </span><span>src</span><span>="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"</span><span>></</span><span>script</span><span>></span><span> 7</span><span><</span><span>script </span><span>src</span><span>="uploads/ajaxFileUpload.js"</span><span> type</span><span>="text/javascript"</span><span> charset</span><span>="utf-8"</span><span>></</span><span>script</span><span>></span><span> 8</span><span><</span><span>script </span><span>type</span><span>="text/javascript"</span><span>></span><span> 9</span><span> $(</span><span>function</span><span>(){
</span><span>10</span><span> $(</span><span>'</span><span>#ti</span><span>'</span><span>).click(</span><span>function</span><span>(){
</span><span>11</span><span>var</span><span> data </span><span>=</span><span> { name: </span><span>'</span><span>my name</span><span>'</span><span>, description: </span><span>'</span><span>short description</span><span>'</span><span> }
</span><span>12</span><span> $.ajaxFileUpload({
</span><span>13</span><span> url: </span><span>'</span><span>up.php</span><span>'</span><span>,
</span><span>14</span><span> secureuri: </span><span>false</span><span>,
</span><span>15</span><span> data: data,
</span><span>16</span><span> fileElementId: </span><span>'</span><span>upf</span><span>'</span><span>,
</span><span>17</span><span> dataType: </span><span>'</span><span>json</span><span>'</span><span>,
</span><span>18</span><span> success: </span><span>function</span><span> (data) {
</span><span>19</span><span>//</span><span> var datejson=eval(data);</span><span>20</span><span>//</span><span>console.log(data[0].path_name)</span><span>21</span><span> $(</span><span>'</span><span>#im</span><span>'</span><span>).append(</span><span>'</span><span><img src="</span><span>'</span><span>+</span><span>data[</span><span>0</span><span>].path_name</span><span>+</span><span>'</span><span>"></span><span>'</span><span>)
</span><span>22</span><span>//</span><span>console.log('<img src="'+data[0].path_name+'">')</span><span>23</span><span> },
</span><span>24</span><span> error: </span><span>function</span><span> (data) {
</span><span>25</span><span> console.log(data)
</span><span>26</span><span> }
</span><span>27</span><span> });
</span><span>28</span><span>29</span><span> })
</span><span>30</span><span>31</span><span> })
</span><span>32</span><span></</span><span>script</span><span>></span><span>33</span><span></</span><span>head</span><span>></span><span>34</span><span><</span><span>body</span><span>></span><span>35</span><span><!--</span><span><form action="up.php" method="post" enctype="multipart/form-data">
</span><span>36</span><span> </form></span><span>--></span><span>37</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="upfm"</span><span> id</span><span>="upf"</span><span> value</span><span>=""</span><span>/></span><span>38</span><span><</span><span>input </span><span>id</span><span>='ti' </span><span>type</span><span>="button"</span><span> value</span><span>="提交"</span><span>/></span><span>39</span><span>40</span><span><</span><span>div </span><span>id</span><span>="im"</span><span>></span><span>41</span><span>42</span><span></</span><span>div</span><span>></span><span>43</span><span>44</span><span></</span><span>body</span><span>></span><span>45</span><span>46</span><span></</span><span>html</span><span>></span>2. Regarding the ajaxFileUpload plug-in, in the following code, if you are using JQ1.9 or above, please copy 1-12 to your ajaxFileUpload code. JQ abandoned the handleError method very early. Comments explain the code very clearly.
<span> 1</span><span>jQuery.extend({
</span><span> 2</span> handleError: <span>function</span><span>( s, xhr, status, e ) {
</span><span> 3</span><span> 4</span><span>if</span><span> ( s.error ) {
</span><span> 5</span> s.error.call( s.context ||<span> s, xhr, status, e );
</span><span> 6</span><span> }
</span><span> 7</span><span> 8</span><span> 9</span><span>if</span><span> ( s.global ) {
</span><span> 10</span> (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError"<span>, [xhr, s, e] );
</span><span> 11</span><span> }
</span><span> 12</span><span> },
</span><span> 13</span> createUploadIframe: <span>function</span> (id, uri) {<span>//</span><span>id为当前系统时间字符串，uri是外部传入的json对象的一个参数</span><span> 14</span><span>//</span><span>create frame</span><span> 15</span><span>var</span> frameId = 'jUploadFrame' + id; <span>//</span><span>给iframe添加一个独一无二的id</span><span> 16</span><span>var</span> iframeHtml = '<iframe + frameId + '" name="' + frameId + '"'; <span>//</span><span>创建iframe元素</span><span> 17</span><span>if</span> (window.ActiveXObject) {<span>//</span><span>判断浏览器是否支持ActiveX控件</span><span> 18</span><span>if</span> (<span>typeof</span> uri == 'boolean'<span>) {
</span><span> 19</span> iframeHtml += ' src="' + 'javascript:false' + '"'<span>;
</span><span> 20</span> } <span>else</span><span>if</span> (<span>typeof</span> uri == 'string'<span>) {
</span><span> 21</span> iframeHtml += ' src="' + uri + '"'<span>;
</span><span> 22</span><span> }
</span><span> 23</span><span> }
</span><span> 24</span> iframeHtml += ' />'<span>;
</span><span> 25</span> jQuery(iframeHtml).appendTo(document.body); <span>//</span><span>将动态iframe追加到body中</span><span> 26</span><span>return</span> jQuery('#' + frameId).get(0); <span>//</span><span>返回iframe对象</span><span> 27</span><span> },
</span><span> 28</span> createUploadForm: <span>function</span> (id, fileElementId, data) {<span>//</span><span>id为当前系统时间字符串，fileElementId为页面<input type='file' />的id，data的值需要根据传入json的键来决定</span><span> 29</span><span>//</span><span>create form </span><span> 30</span><span>var</span> formId = 'jUploadForm' + id; <span>//</span><span>给form添加一个独一无二的id</span><span> 31</span><span>var</span> fileId = 'jUploadFile' + id; <span>//</span><span>给<input type='file' />添加一个独一无二的id</span><span> 32</span><span>var</span> form = jQuery('<form action="" method="POST" name="' + formId + '" + formId + '" enctype="multipart/form-data" ></form>'); <span>//</span><span>创建form元素</span><span> 33</span><span>if</span> (data) {<span>//</span><span>通常为false</span><span> 34</span><span>for</span> (<span>var</span> i <span>in</span><span> data) {
</span><span> 35</span> jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); <span>//</span><span>根据data的内容，创建隐藏域，这部分我还不知道是什么时候用到。估计是传入json的时候，如果默认传一些参数的话要用到。</span><span> 36</span><span> }
</span><span> 37</span> } <span>var</span> oldElement = jQuery('#' + fileElementId); <span>//</span><span>得到页面中的<input type='file' />对象</span><span> 38</span><span>var</span> newElement = jQuery(oldElement).clone(); <span>//</span><span>克隆页面中的<input type='file' />对象</span><span> 39</span> jQuery(oldElement).attr('id', fileId); <span>//</span><span>修改原对象的id</span><span> 40</span> jQuery(oldElement).before(newElement); <span>//</span><span>在原对象前插入克隆对象</span><span> 41</span> jQuery(oldElement).appendTo(form); <span>//</span><span>把原对象插入到动态form的结尾处</span><span> 42</span><span>//</span><span>set attributes</span><span> 43</span> jQuery(form).css('position', 'absolute'); <span>//</span><span>给动态form添加样式，使其浮动起来，</span><span> 44</span> jQuery(form).css('top', '-1200px'<span>);
</span><span> 45</span> jQuery(form).css('left', '-1200px'<span>);
</span><span> 46</span> jQuery(form).appendTo('body'); <span>//</span><span>把动态form插入到body中</span><span> 47</span><span>return</span><span> form;
</span><span> 48</span><span> },
</span><span> 49</span> ajaxFileUpload: <span>function</span> (s) {<span>//</span><span>这里s是个json对象，传入一些ajax的参数</span><span> 50</span><span>//</span><span> TODO introduce global settings, allowing the client to modify them for all requests, not only timeout </span><span> 51</span> s = jQuery.extend({}, jQuery.ajaxSettings, s); <span>//</span><span>此时的s对象是由jQuery.ajaxSettings和原s对象扩展后的对象</span><span> 52</span><span>var</span> id = <span>new</span> Date().getTime(); <span>//</span><span>取当前系统时间，目的是得到一个独一无二的数字</span><span> 53</span><span>var</span> form = jQuery.createUploadForm(id, s.fileElementId, (<span>typeof</span> (s.data) == 'undefined' ? <span>false</span> : s.data)); <span>//</span><span>创建动态form</span><span> 54</span><span>var</span> io = jQuery.createUploadIframe(id, s.secureuri); <span>//</span><span>创建动态iframe</span><span> 55</span><span>var</span> frameId = 'jUploadFrame' + id; <span>//</span><span>动态iframe的id</span><span> 56</span><span>var</span> formId = 'jUploadForm' + id; <span>//</span><span>动态form的id</span><span> 57</span><span>//</span><span> Watch for a new set of requests</span><span> 58</span><span>if</span> (s.global && !jQuery.active++) {<span>//</span><span>当jQuery开始一个ajax请求时发生</span><span> 59</span> jQuery.event.trigger("ajaxStart"); <span>//</span><span>触发ajaxStart方法</span><span> 60</span> } <span>var</span> requestDone = <span>false</span>; <span>//</span><span>请求完成标志</span><span> 61</span><span>//</span><span> Create the request object</span><span> 62</span><span>var</span> xml = {}; <span>if</span><span> (s.global)
</span><span> 63</span> jQuery.event.trigger("ajaxSend", [xml, s]); <span>//</span><span>触发ajaxSend方法</span><span> 64</span><span>//</span><span> Wait for a response to come back</span><span> 65</span><span>var</span> uploadCallback = <span>function</span> (isTimeout) {<span>//</span><span>回调函数</span><span> 66</span><span>var</span> io = document.getElementById(frameId); <span>//</span><span>得到iframe对象</span><span> 67</span><span>try</span> { <span>if</span> (io.contentWindow) {<span>//</span><span>动态iframe所在窗口对象是否存在</span><span> 68</span> xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML : <span>null</span><span>;
</span><span> 69</span> xml.responseXML = io.contentWindow.document.XMLDocument ?<span> io.contentWindow.document.XMLDocument : io.contentWindow.document;
</span><span> 70</span> } <span>else</span><span>if</span> (io.contentDocument) {<span>//</span><span>动态iframe的文档对象是否存在</span><span> 71</span> xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML : <span>null</span><span>;
</span><span> 72</span> xml.responseXML = io.contentDocument.document.XMLDocument ?<span> io.contentDocument.document.XMLDocument : io.contentDocument.document;
</span><span> 73</span><span> }
</span><span> 74</span> } <span>catch</span><span> (e) {
</span><span> 75</span> jQuery.handleError(s, xml, <span>null</span><span>, e);
</span><span> 76</span> } <span>if</span> (xml || isTimeout == "timeout") {<span>//</span><span>xml变量被赋值或者isTimeout == "timeout"都表示请求发出，并且有响应</span><span> 77</span> requestDone = <span>true</span>; <span>//</span><span>请求完成</span><span> 78</span><span>var</span> status; <span>try</span><span> {
</span><span> 79</span> status = isTimeout != "timeout" ? "success" : "error"; <span>//</span><span>如果不是“超时”，表示请求成功</span><span> 80</span><span>//</span><span> Make sure that the request was successful or notmodified</span><span> 81</span><span>if</span> (status != "error") { <span>//</span><span> process the data (runs the xml through httpData regardless of callback)</span><span> 82</span><span>var</span> data = jQuery.uploadHttpData(xml, s.dataType); <span>//</span><span>根据传送的type类型，返回json对象，此时返回的data就是后台操作后的返回结果</span><span> 83</span><span>//</span><span> If a local callback was specified, fire it and pass it the data</span><span> 84</span><span>if</span><span> (s.success)
</span><span> 85</span> s.success(data, status); <span>//</span><span>执行上传成功的操作</span><span> 86</span><span>//</span><span> Fire the global callback</span><span> 87</span><span>if</span><span> (s.global)
</span><span> 88</span> jQuery.event.trigger("ajaxSuccess"<span>, [xml, s]);
</span><span> 89</span> } <span>else</span><span> 90</span><span> jQuery.handleError(s, xml, status);
</span><span> 91</span> } <span>catch</span><span> (e) {
</span><span> 92</span> status = "error"<span>;
</span><span> 93</span><span> jQuery.handleError(s, xml, status, e);
</span><span> 94</span> } <span>//</span><span> The request was completed</span><span> 95</span><span>if</span><span> (s.global)
</span><span> 96</span> jQuery.event.trigger("ajaxComplete", [xml, s]); <span>//</span><span> Handle the global AJAX counter</span><span> 97</span><span>if</span> (s.global && ! --<span>jQuery.active)
</span><span> 98</span> jQuery.event.trigger("ajaxStop"); <span>//</span><span> Process result</span><span> 99</span><span>if</span><span> (s.complete)
</span><span>100</span><span> s.complete(xml, status);
</span><span>101</span> jQuery(io).unbind();<span>//</span><span>移除iframe的事件处理程序</span><span>102</span> setTimeout(<span>function</span> () {<span>//</span><span>设置超时时间</span><span>103</span><span>try</span><span> {
</span><span>104</span> jQuery(io).remove();<span>//</span><span>移除动态iframe</span><span>105</span> jQuery(form).remove();<span>//</span><span>移除动态form</span><span>106</span> } <span>catch</span><span> (e) {
</span><span>107</span> jQuery.handleError(s, xml, <span>null</span><span>, e);
</span><span>108</span><span> }
</span><span>109</span> }, 100<span>)
</span><span>110</span> xml = <span>null</span><span>111</span><span> }
</span><span>112</span> } <span>//</span><span> Timeout checker</span><span>113</span><span>if</span> (s.timeout > 0) {<span>//</span><span>超时检测</span><span>114</span> setTimeout(<span>function</span> () { <span>//</span><span> Check to see if the request is still happening</span><span>115</span><span>if</span> (!requestDone) uploadCallback("timeout");<span>//</span><span>如果请求仍未完成，就发送超时信号</span><span>116</span><span> }, s.timeout);
</span><span>117</span> } <span>try</span> { <span>var</span> form = jQuery('#' +<span> formId);
</span><span>118</span> jQuery(form).attr('action', s.url);<span>//</span><span>传入的ajax页面导向url</span><span>119</span> jQuery(form).attr('method', 'POST');<span>//</span><span>设置提交表单方式</span><span>120</span> jQuery(form).attr('target', frameId);<span>//</span><span>返回的目标iframe，就是创建的动态iframe</span><span>121</span><span>if</span> (form.encoding) {<span>//</span><span>选择编码方式</span><span>122</span> jQuery(form).attr('encoding', 'multipart/form-data'<span>);
</span><span>123</span> } <span>else</span><span> {
</span><span>124</span> jQuery(form).attr('enctype', 'multipart/form-data'<span>);
</span><span>125</span><span> }
</span><span>126</span> jQuery(form).submit();<span>//</span><span>提交form表单</span><span>127</span> } <span>catch</span><span> (e) {
</span><span>128</span> jQuery.handleError(s, xml, <span>null</span><span>, e);
</span><span>129</span><span> }
</span><span>130</span> jQuery('#' + frameId).load(uploadCallback); <span>//</span><span>ajax 请求从服务器加载数据，同时传入回调函数</span><span>131</span><span>return</span> { abort: <span>function</span><span> () { } };
</span><span>132</span><span> },
</span><span>133</span> uploadHttpData: <span>function</span> (r, type) { <span>var</span> data = !<span>type;
</span><span>134</span> data = type == "xml" || data ? r.responseXML : r.responseText; <span>//</span><span> If the type is "script", eval it in global context</span><span>135</span><span>if</span> (type == "script"<span>)
</span><span>136</span> jQuery.globalEval(data); <span>//</span><span> Get the JavaScript object, if JSON is used.</span><span>137</span><span>if</span> (type == "json"<span>)
</span><span>138</span> eval("data = " + data); <span>//</span><span> evaluate scripts within html</span><span>139</span><span>if</span> (type == "html"<span>)
</span><span>140</span> jQuery("<div>").html(data).evalScripts(); <span>return</span><span> data;
</span><span>141</span><span> }
</span><span>142</span> })3. php code
<span> 1</span> <?<span>php
</span><span> 2</span><span>//</span><span>print_r($_FILES);
</span><span> 3</span><span>//echo json_encode(print_r($_FILES));</span><span> 4</span><span> 5</span><span>/*</span><span>*
</span><span> 6</span><span> * 生成唯一字符串
</span><span> 7</span><span> * @return string
</span><span> 8</span><span>*/</span><span> 9</span><span>function</span><span> getUniName(){
</span><span> 10</span><span>return</span><span>md5</span>(<span>uniqid</span>(<span>microtime</span>(<span>true</span>),<span>true</span><span>));
</span><span> 11</span><span>}
</span><span> 12</span><span> 13</span><span>/*</span><span>*
</span><span> 14</span><span> * 得到文件的扩展名
</span><span> 15</span><span> * @param string $filename
</span><span> 16</span><span> * @return string
</span><span> 17</span><span>*/</span><span> 18</span><span>function</span> getExt(<span>$filename</span><span>){
</span><span> 19</span><span>return</span><span>strtolower</span>(<span>end</span>(<span>explode</span>(".",<span>$filename</span><span>)));
</span><span> 20</span><span>}
</span><span> 21</span><span> 22</span><span>/*</span><span>*
</span><span> 23</span><span> * 构建上传文件信息
</span><span> 24</span><span> * @return array
</span><span> 25</span><span>*/</span><span> 26</span><span> 27</span><span>function</span><span> buildInfo(){
</span><span> 28</span><span>if</span>(!<span>$_FILES</span><span>){
</span><span> 29</span><span>return</span><span> ;
</span><span> 30</span><span> }
</span><span> 31</span><span>$i</span>=0<span>;
</span><span> 32</span><span>foreach</span>(<span>$_FILES</span><span>as</span><span>$v</span><span>){
</span><span> 33</span><span>//</span><span>单文件</span><span> 34</span><span>if</span>(<span>is_string</span>(<span>$v</span>['name'<span>])){
</span><span> 35</span><span>$files</span>[<span>$i</span>]=<span>$v</span><span>;
</span><span> 36</span><span>$i</span>++<span>;
</span><span> 37</span> }<span>else</span><span>{
</span><span> 38</span><span>//</span><span>多文件</span><span> 39</span><span>foreach</span>(<span>$v</span>['name'] <span>as</span><span>$key</span>=><span>$val</span><span>){
</span><span> 40</span><span>$files</span>[<span>$i</span>]['name']=<span>$val</span><span>;
</span><span> 41</span><span>$files</span>[<span>$i</span>]['size']=<span>$v</span>['size'][<span>$key</span><span>];
</span><span> 42</span><span>$files</span>[<span>$i</span>]['tmp_name']=<span>$v</span>['tmp_name'][<span>$key</span><span>];
</span><span> 43</span><span>$files</span>[<span>$i</span>]['error']=<span>$v</span>['error'][<span>$key</span><span>];
</span><span> 44</span><span>$files</span>[<span>$i</span>]['type']=<span>$v</span>['type'][<span>$key</span><span>];
</span><span> 45</span><span>$i</span>++<span>;
</span><span> 46</span><span> }
</span><span> 47</span><span> }
</span><span> 48</span><span> }
</span><span> 49</span><span>return</span><span>$files</span><span>;
</span><span> 50</span><span>}
</span><span> 51</span><span>function</span> uploadFile(<span>$path</span>="uploads",<span>$allowExt</span>=<span>array</span>("gif","jpeg","png","jpg","wbmp"),<span>$maxSize</span>=2097152,<span>$imgFlag</span>=<span>true</span><span>){
</span><span> 52</span><span>if</span>(!<span>file_exists</span>(<span>$path</span>)){<span>//</span><span>判断是否有$path文件夹，没有则创建</span><span> 53</span><span>mkdir</span>(<span>$path</span>,0777,<span>true</span>);<span>//</span><span>0777表示最大权限</span><span> 54</span><span> }
</span><span> 55</span><span>$i</span>=0<span>;
</span><span> 56</span><span>$files</span>=<span>buildInfo();
</span><span> 57</span><span>if</span>(!(<span>$files</span>&&<span>is_array</span>(<span>$files</span><span>))){
</span><span> 58</span><span>return</span><span> ;
</span><span> 59</span><span> }
</span><span> 60</span><span>foreach</span>(<span>$files</span><span>as</span><span>$file</span><span>){
</span><span> 61</span><span>if</span>(<span>$file</span>['error']===UPLOAD_ERR_OK){<span>//</span><span>就是0</span><span> 62</span><span>$ext</span>=getExt(<span>$file</span>['name'<span>]);
</span><span> 63</span><span>//</span><span>检测文件的扩展名</span><span> 64</span><span>if</span>(!<span>in_array</span>(<span>$ext</span>,<span>$allowExt</span><span>)){
</span><span> 65</span><span>exit</span>("非法文件类型"<span>);
</span><span> 66</span><span> }
</span><span> 67</span><span>//</span><span>校验是否是一个真正的图片类型</span><span> 68</span><span>if</span>(<span>$imgFlag</span><span>){
</span><span> 69</span><span>if</span>(!<span>getimagesize</span>(<span>$file</span>['tmp_name'<span>])){
</span><span> 70</span><span>exit</span>("不是真正的图片类型"<span>);
</span><span> 71</span><span> 72</span> }<span>else</span><span>{
</span><span> 73</span><span>$file</span>["filesize"]=<span>getimagesize</span>(<span>$file</span>['tmp_name'<span>]);
</span><span> 74</span><span>//</span><span>把文件信息付给$file 传到前台返回时数组
</span><span> 75</span><span> //如 [720, 1280, 2, "width="720" height="1280"", 8, 3, "image/jpeg"]</span><span> 76</span><span> }
</span><span> 77</span><span> }
</span><span> 78</span><span>//</span><span>上传文件的大小</span><span> 79</span><span>if</span>(<span>$file</span>['size']><span>$maxSize</span><span>){
</span><span> 80</span><span>exit</span>("上传文件过大"<span>);
</span><span> 81</span><span> }
</span><span> 82</span><span>if</span>(!<span>is_uploaded_file</span>(<span>$file</span>['tmp_name'<span>])){
</span><span> 83</span><span>exit</span>("不是通过HTTP POST方式上传上来的"<span>);
</span><span> 84</span><span> }
</span><span> 85</span><span>$filename</span>=getUniName().".".<span>$ext</span>;<span>//</span><span>改文件重新命名</span><span> 86</span><span>$destination</span>=<span>$path</span>."/".<span>$filename</span><span>;
</span><span> 87</span><span>if</span>(<span>move_uploaded_file</span>(<span>$file</span>['tmp_name'], <span>$destination</span><span>)){
</span><span> 88</span><span>$file</span>['name']=<span>$filename</span><span>;
</span><span> 89</span><span>$file</span>['path_name']=<span>$destination</span><span>;
</span><span> 90</span><span>unset</span>(<span>$file</span>['tmp_name'],<span>$file</span>['size'],<span>$file</span>['type']);<span>//</span><span>去除不需要传给的信息</span><span> 91</span><span>$uploadedFiles</span>[<span>$i</span>]=<span>$file</span><span>;
</span><span> 92</span><span>$i</span>++<span>;
</span><span> 93</span><span> }
</span><span> 94</span> }<span>else</span><span>{
</span><span> 95</span><span>switch</span>(<span>$file</span>['error'<span>]){
</span><span> 96</span><span>case</span> 1:
<span> 97</span><span>$mes</span>="超过了配置文件上传文件的大小";<span>//</span><span>UPLOAD_ERR_INI_SIZE</span><span> 98</span><span>break</span><span>;
</span><span> 99</span><span>case</span> 2:
<span>100</span><span>$mes</span>="超过了表单设置上传文件的大小"; <span>//</span><span>UPLOAD_ERR_FORM_SIZE</span><span>101</span><span>break</span><span>;
</span><span>102</span><span>case</span> 3:
<span>103</span><span>$mes</span>="文件部分被上传";<span>//</span><span>UPLOAD_ERR_PARTIAL</span><span>104</span><span>break</span><span>;
</span><span>105</span><span>case</span> 4:
<span>106</span><span>$mes</span>="没有文件被上传1111";<span>//</span><span>UPLOAD_ERR_NO_FILE</span><span>107</span><span>break</span><span>;
</span><span>108</span><span>case</span> 6:
<span>109</span><span>$mes</span>="没有找到临时目录";<span>//</span><span>UPLOAD_ERR_NO_TMP_DIR</span><span>110</span><span>break</span><span>;
</span><span>111</span><span>case</span> 7:
<span>112</span><span>$mes</span>="文件不可写";<span>//</span><span>UPLOAD_ERR_CANT_WRITE;</span><span>113</span><span>break</span><span>;
</span><span>114</span><span>case</span> 8:
<span>115</span><span>$mes</span>="由于PHP的扩展程序中断了文件上传";<span>//</span><span>UPLOAD_ERR_EXTENSION</span><span>116</span><span>break</span><span>;
</span><span>117</span><span> }
</span><span>118</span><span>echo</span><span>$mes</span><span>;
</span><span>119</span><span> }
</span><span>120</span><span> }
</span><span>121</span><span>return</span><span>$uploadedFiles</span><span>;
</span><span>122</span><span>};
</span><span>123</span><span>124</span><span>$rows</span>=uploadFile(<span>$path</span>="uploads",<span>$allowExt</span>=<span>array</span>("gif","jpeg","png","jpg","wbmp"),<span>$maxSize</span>=2097152,<span>$imgFlag</span>=<span>true</span><span>);
</span><span>125</span><span>126</span><span>echo</span> json_encode(<span>$rows</span>);uploadFile($path="uploads",$allowExt=array("gif","jpeg","png","jpg","wbmp"),$maxSize=2097152 ,$imgFlag=true);
This php code can be changed to upload other files and size limits. getimagesize is used to determine whether the suffix is changed for a virus file.
Copy the above code directly to complete the simultaneous upload of images and user data.
Return results: [{"name":"d032a4ee7e957d956c8af0039d7e3085.jpg","error":0,"filesiz":{"0":720,"1":1280,"2":2,"3": "width="720" height="1280"","bits":8,"channels":3,"mime":"image/jpeg"},"path_name":"uploads/d032a4ee7e957d956c8af0039d7e3085.jpg"}]
The above introduces the JQ plug-in ajaxFileUpload, PHP implementation of pictures, and data upload at the same time, including the content of ajaxfileupload. I hope it will be helpful to friends who are interested in PHP tutorials.
Is it necessary to upgrade windows 11?
Introduction to output devices in computers
computer virus
What to do if the remote desktop cannot connect
Java retains two decimal places
The performance of microcomputers mainly depends on
Java performs forced type conversion
How to make a responsive web page
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
