在胡說八道之前，首先聲明，本文是建立在掌握php單文件上傳的基礎上,所以這裡就不贅述文件上傳伺服器配置，表單設定該注意的地方了。
話不多少，直入主題，在請求頁面方面有兩種寫法（只呈現表單部分，以上傳三個文件為例。）
<span><</span><span>form </span><span>action</span><span>="doAction.php"</span><span> method</span><span>="post"</span><span> enctype</span><span>="multipart/form-data"</span><span>></span><span> 请选择我的上传文件
</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfile[]"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfile[]"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfile[]"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="submit"</span><span> value</span><span>="上传"</span><span>/></span><span></</span><span>form</span><span>></span><span><</span><span>form </span><span>action</span><span>="doAction.php"</span><span> method</span><span>="post"</span><span> enctype</span><span>="multipart/form-data"</span><span>></span><span> 请选择我的上传文件
</span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfil1"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfil2"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="file"</span><span> name</span><span>="myfil3"</span><span>/></span><span><</span><span>input </span><span>type</span><span>="submit"</span><span> value</span><span>="上传"</span><span>/></span><span></</span><span>form</span><span>></span>兩個不同，發現僅僅是兩個不同的對比，發現只有兩個不同 ，第一個將name設定成陣列的形式，而第二個則是我們通常設定也很容易想到的一種方法。
雖然表面上顯示的僅有一點點不同，但真正提交到doAction.php頁面的$_FILES則有很大不同。
第一種的$_FILES是一個三維數組，而第二種是二維數組，如下：
顯然我們處理第二種格式的$_FILES更加方便。當然我們也可以想辦法將第一種格式的$_FILES轉換成第二種形式，如下：
<span>function</span><span> getFiles(){
</span><span>foreach</span>(<span>$_FILES</span><span>as</span><span>$file</span><span>){
</span><span>$fileNum</span>=<span>count</span>(<span>$file</span>['name'<span>]);
</span><span>if</span> (<span>$fileNum</span>==1<span>) {
</span><span>$files</span>=<span>$file</span><span>;
}</span><span>else</span><span>{
</span><span>for</span> (<span>$i</span>=0; <span>$i</span> < <span>$fileNum</span>; <span>$i</span>++<span>) {
</span><span>$files</span>[<span>$i</span>]['name']=<span>$file</span>['name'][<span>$i</span><span>];
</span><span>$files</span>[<span>$i</span>]['type']=<span>$file</span>['type'][<span>$i</span><span>];
</span><span>$files</span>[<span>$i</span>]['tmp_name']=<span>$file</span>['tmp_name'][<span>$i</span><span>];
</span><span>$files</span>[<span>$i</span>]['error']=<span>$file</span>['error'][<span>$i</span><span>];
</span><span>$files</span>[<span>$i</span>]['size']=<span>$file</span>['size'][<span>$i</span><span>];
}
}
}
</span><span>return</span><span>$files</span><span>;
}</span>透過這個函數，將$_FILES轉換為下面格式:
『兩種
〔此刻，此刻兩種方式已經處在同一起跑線了，下面的工作就是寫uploadFile()函數對每個檔案進行上傳，這也是本文的重點。 文件上傳函數：<span>function</span> uploadFile(<span>$file</span>,<span>$path</span>='./uploads',<span>$max_size</span>,<span>$allowExt</span><span>){
</span><span>$filename</span>=<span>$file</span>['name'<span>];
</span><span>$type</span>=<span>$file</span>['type'<span>];
</span><span>$temp_name</span>=<span>$file</span>['tmp_name'<span>];
</span><span>$error</span>=<span>$file</span>['error'<span>];
</span><span>$size</span>=<span>$file</span>['size'<span>];
</span><span>if</span> (<span>$error</span>==<span>UPLOAD_ERR_OK) {
</span><span>if</span> (<span>$size</span>><span>$max_size</span><span>) {
</span><span>$res</span>['mes']=<span>$filename</span>."文件超过规定上传大小"<span>;
}
</span><span>$ext</span>=getExt(<span>$filename</span><span>);
</span><span>if</span> (!<span>in_array</span>(<span>$ext</span>, <span>$allowExt</span><span>)) {
</span><span>$res</span>['mes']=<span>$filename</span>.'文件名不合乎规范'<span>;
}
</span><span>if</span> (!<span>is_uploaded_file</span>(<span>$temp_name</span><span>)) {
</span><span>$res</span>['mes']=<span>$filename</span>."文件不是通过HTTP POST 方法上传上传过来的"<span>;
}
</span><span>if</span> (@<span>$res</span><span>) {
</span><span>return</span><span>$res</span><span>;
}
</span><span>if</span> (!<span>file_exists</span>(<span>$path</span><span>)) {
</span><span>mkdir</span>(<span>$path</span>,0777,<span>true</span><span>);
</span><span>chmod</span>(<span>$path</span>, 0777<span>);
}
</span><span>$fname</span>=<span>getUniName();
</span><span>$destination</span>=<span>$path</span>.'/'.<span>$fname</span>.'.'.<span>$ext</span><span>;
</span><span>if</span> (<span>move_uploaded_file</span>(<span>$temp_name</span>, <span>$destination</span><span>)) {
</span><span>$res</span>['mes']=<span>$filename</span>.'上传成功'<span>;
</span><span>$res</span>['dest']=<span>$destination</span><span>;
}</span><span>else</span><span>{
</span><span>$res</span>['mes']=<span>$filename</span>."文件上传失败"<span>;
}
}</span><span>else</span><span>{
</span><span>switch</span> (<span>$error</span><span>) {
</span><span>case</span> '1':
<span>$res</span>['mes']="超过了配置文件上传文件的大小"<span>;
</span><span>break</span><span>;
</span><span>case</span> '2':
<span>$res</span>['mes']="超过表单设置上传文件文件的大小"<span>;
</span><span>break</span><span>;
</span><span>case</span> '3':
<span>$res</span>['mes']="文件部分被上传"<span>;
</span><span>break</span><span>;
</span><span>case</span> '4':
<span>$res</span>['mes']="没有文件被上传"<span>;
</span><span>break</span><span>;
</span><span>case</span> '6':
<span>$res</span>['mes']="没有找到临时目录"<span>;
</span><span>break</span><span>;
</span><span>case</span> '7':
<span>$res</span>['mes']="文件不可写"<span>;
</span><span>break</span><span>;
</span><span>default</span>:
<span>$res</span>['mes']="上传文件失败"<span>;
</span><span>break</span><span>;
}
}
</span><span>return</span><span>$res</span><span>;
}</span><span>/*</span><span>*
* 获得文件扩展名
* @param string $filename 上传文件名
* @return string 返回扩展名
</span><span>*/</span><span>function</span> getExt(<span>$filename</span><span>){
</span><span>$arr</span>=<span>explode</span>('.', <span>basename</span>(<span>$filename</span><span>));
</span><span>return</span><span>end</span>(<span>$arr</span><span>);
}
</span><span>/*</span><span>*
* 获得文件唯一扩展名
* @return string 经过md5后生成32位唯一的上传文件名
</span><span>*/</span><span>function</span><span> getUniName(){
</span><span>return</span><span>md5</span>(<span>uniqid</span>(<span>microtime</span>(<span>true</span>),<span>true</span><span>));
}</span>以上就介紹了php檔案上傳之多檔案上傳，包含了方面的內容，希望對PHP教學有興趣的朋友有幫助。
🎜
