PHP 文件上传的综合实例_PHP教程

php文件上传

1、upload.php

 "-//W3C//DTD HTML 4.01 Transitional//EN">




 
 




请填写用户名

请简单介绍文件
</p>

<pre class="code"><?<span php
</span><span /*</span><span *
* 文件上传 接收数据
* by www.jbxue.com
</span><span */</span>
<span $username</span>=<span $_POST</span>['username'<span ];
</span><span $fileintro</span>=<span $_POST</span>['fileintro'<span ];

</span><span //</span><span echo $username.$fileintro;
//获取文件信息</span><span 
/*</span><span  echo "<pre class="brush:php;toolbar:false;">";
print_r($_FILES);
echo "</pre>";
<span> 
<span><span>
<span>=<span>['myfile']['size'<span><span if>(<span>>2*1024*1024<span><span echo> "<script type="text/javascript">window.alert('文件不能大于2M')</script>"<span><span exit><span><span><span>
<span>=<span>['myfile']['type'<span><span if>(<span>!="image/jpeg" && <span>!="image/pjpeg"<span><span echo> "文件类型只能是 jpg 格式"<span><span exit><span><span><span>
<span if>(<span is_uploaded_file>(<span>['myfile']['tmp_name'<span><span><span>
<span>=<span>['myfile']['tmp_name'<span><span><span>
<span>=<span>['DOCUMENT_ROOT']."/file/up/".<span><span><span if>(!<span file_exists>(<span><span><span mkdir> (<span><span><span><span>
<span>=<span>['myfile']['name'<span><span>=<span>."/".<span time>().<span rand>(1,1000).<span substr>(<span>,<span strripos>(<span>,"."<span><span><span echo>
<span if>(<span move_uploaded_file>(<span>,<span iconv>("utf-8","gb2312","<span>"<span><span echo> <span>['myfile']['name']."上传成功"<span><span else><span><span echo> "上传失败"<span><span else><span><span echo> "上传失败"<span>?>

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<pre class="code"><?<span php
</span><span /*</span><span *
* 文件上传类
* by www.jbxue.com
</span><span */</span>
<span class</span><span  Upload{
</span><span public</span> <span $upload_name</span>; <span //</span><span 上传文件名</span>
<span public</span> <span $upload_tmp_path</span>; <span //</span><span 上传文件保存到服务器的temp路径</span>
<span public</span> <span $file_size</span><span ;
</span><span public</span> <span $file_type</span><span ;
</span><span public</span> <span $file_save_path</span><span ;
</span><span function</span><span  __construct(){
</span><span $this</span>->upload_name=<span $_FILES</span>['myfile']['name'<span ];
</span><span $this</span>->upload_tmp_path=<span $_FILES</span>['myfile']['tmp_name'<span ];
</span><span $this</span>->file_size=<span $_FILES</span>['myfile']['size'<span ];
</span><span $this</span>->file_type=<span $_FILES</span>['myfile']['type'<span ];
</span><span $this</span>->allow_file_type = <span array</span>('jpeg','jpg','png','gif','bmp','doc','zip','rar','txt','wps','xlsx','ppt'<span );
</span><span $this</span>->file_save_path=<span $_SERVER</span>['DOCUMENT_ROOT']."/file/up/"<span ;
}
</span><span public</span> <span function</span> upload_file(<span $username</span><span ){
</span><span //</span><span 判断文件大小</span>
<span if</span>(<span $this</span>->file_size>2*1024*1024<span ){
</span><span echo</span> "<script type='text/javascript'>window.alert('文件不能大于2M')</script>"<span ;
</span><span exit</span><span ();
}
</span><span //</span><span 获取文件类型</span><span 
/*</span><span  if($this->file_type!="image/jpeg" && $this->file_type!="image/pjpeg"){
echo "文件类型只能是 jpg 格式";
exit();
}
</span><span */</span> <span //</span><span 获取文件的扩展名</span>
<span $file_type</span>=<span $this</span>->getFileExt(<span $this</span>-><span upload_name);
</span><span if</span>(!<span in_array</span>(<span $file_type</span>,<span $this</span>-><span allow_file_type)){
</span><span echo</span> "上传文件类型格式错误"<span ;
</span><span exit</span><span ();
} 
</span><span //</span><span 判断上传是否OK</span>
<span if</span>(<span is_uploaded_file</span>(<span $this</span>-><span upload_tmp_path)){

</span><span //</span><span 防止图片覆盖问题，为每个用户建立一个文件夹 </span>
<span $user_path</span>=<span $this</span>->file_save_path.<span $username</span><span ;
</span><span if</span>(!<span file_exists</span>(<span $user_path</span><span )){
</span><span mkdir</span> (<span $user_path</span><span );
}
</span><span //</span><span $move_to_file=$user_path."/".$_FILES['myfile']['name'];
//防止用户上传用户名相同的问题
//$file_true_name=$_FILES['myfile']['name'];</span>
<span $move_to_file</span>=<span $user_path</span>."/".<span time</span>().<span rand</span>(1,1000).<span substr</span>(<span $this</span>->upload_name,<span strripos</span>(<span $this</span>->upload_name,"."<span ));
</span><span //</span><span echo $upload_file.$move_to_file;
//中文要转码</span>
<span if</span>(<span move_uploaded_file</span>(<span $this</span>->upload_tmp_path,<span iconv</span>("utf-8","gb2312","<span $move_to_file</span>"<span ))){
</span><span echo</span> <span $this</span>->upload_name."上传成功"<span ;
}</span><span else</span><span {
</span><span echo</span> "上传失败"<span ;
}
}</span><span else</span><span {
</span><span echo</span> "上传失败"<span ;
}
}

</span><span //</span><span 获取文件的扩展名</span>
<span public</span> <span function</span> getFileExt(<span $filename</span><span ){
</span><span $fileExt</span>=<span pathinfo</span>(<span $filename</span><span );
</span><span return</span> <span $fileExt</span>["extension"<span ];
}
}
</span>?></pre>

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