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【PHP】 php下载文件
作者: / 发布于2011/1/4/ 644
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            <pre style="line-height: 150%; font-family: Verdana, Monospace; font-size: 12px; font-weight: bold; margin-right: 10px"><span style="color: #0000ff"><?php</span>

<span style="color: #000088">$filename</span> <span style="color: #339933">=</span> <span style="color: #000088">$_GET</span><span style="color: #009900">[</span><span style="color: #0000ff">'filename'</span><span style="color: #009900">]</span><span style="color: #339933">;</span>

<span style="font-style: italic; color: #666666">// Modify this line to indicate the location of the files you want people to be able to download</span>
<span style="font-style: italic; color: #666666">// This path must not contain a trailing slash. ie. /temp/files/download</span>
<span style="color: #000088">$download_path</span> <span style="color: #339933">=</span> <span style="color: #0000ff">"ficheros/"</span><span style="color: #339933">;</span>
    
<span style="font-style: italic; color: #666666">// Make sure we can't download files above the current directory location.</span>
<span style="color: #0099cc">if</span><span style="color: #009900">(</span><span style="color: blue">eregi</span><span style="color: #009900">(</span><span style="color: #0000ff">"\.\."</span><span style="color: #339933">,</span> <span style="color: #000088">$filename</span><span style="color: #009900">)</span><span style="color: #009900">)</span> <span style="color: blue">die</span><span style="color: #009900">(</span><span style="color: #0000ff">"I'm sorry, you may not download that file."</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: #000088">$file</span> <span style="color: #339933">=</span> <span style="color: blue">str_replace</span><span style="color: #009900">(</span><span style="color: #0000ff">".."</span><span style="color: #339933">,</span> <span style="color: #0000ff">""</span><span style="color: #339933">,</span> <span style="color: #000088">$filename</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
    
<span style="font-style: italic; color: #666666">// Make sure we can't download .ht control files.</span>
<span style="color: #0099cc">if</span><span style="color: #009900">(</span><span style="color: blue">eregi</span><span style="color: #009900">(</span><span style="color: #0000ff">"\.ht.+"</span><span style="color: #339933">,</span> <span style="color: #000088">$filename</span><span style="color: #009900">)</span><span style="color: #009900">)</span> <span style="color: blue">die</span><span style="color: #009900">(</span><span style="color: #0000ff">"I'm sorry, you may not download that file."</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
    
<span style="font-style: italic; color: #666666">// Combine the download path and the filename to create the full path to the file.</span>
<span style="color: #000088">$file</span> <span style="color: #339933">=</span> <span style="color: #0000ff">"<span style="color: #006699; font-weight: bold">$download_path</span><span style="color: #006699; font-weight: bold">$file</span>"</span><span style="color: #339933">;</span>
    
<span style="font-style: italic; color: #666666">// Test to ensure that the file exists.</span>
<span style="color: #0099cc">if</span><span style="color: #009900">(</span><span style="color: #339933">!</span><span style="color: blue">file_exists</span><span style="color: #009900">(</span><span style="color: #000088">$file</span><span style="color: #009900">)</span><span style="color: #009900">)</span> <span style="color: blue">die</span><span style="color: #009900">(</span><span style="color: #0000ff">"I'm sorry, the file doesn't seem to exist."</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
    
<span style="font-style: italic; color: #666666">// Extract the type of file which will be sent to the browser as a header</span>
<span style="color: #000088">$type</span> <span style="color: #339933">=</span> <span style="color: blue">filetype</span><span style="color: #009900">(</span><span style="color: #000088">$file</span><span style="color: #009900">)</span><span style="color: #339933">;</span>

<span style="font-style: italic; color: #666666">// Get a date and timestamp</span>
<span style="color: #000088">$today</span> <span style="color: #339933">=</span> <span style="color: blue">date</span><span style="color: #009900">(</span><span style="color: #0000ff">"F j, Y, g:i a"</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: #000088">$time</span> <span style="color: #339933">=</span> <span style="color: blue">time</span><span style="color: #009900">(</span><span style="color: #009900">)</span><span style="color: #339933">;</span>

<span style="font-style: italic; color: #666666">// Send file headers</span>
<span style="color: blue">header</span><span style="color: #009900">(</span><span style="color: #0000ff">"Content-type: <span style="color: #006699; font-weight: bold">$type</span>"</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: blue">header</span><span style="color: #009900">(</span><span style="color: #0000ff">"Content-Disposition: attachment;filename=<span style="color: #006699; font-weight: bold">$filename</span>"</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: blue">header</span><span style="color: #009900">(</span><span style="color: #0000ff">"Content-Transfer-Encoding: binary"</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: blue">header</span><span style="color: #009900">(</span><span style="color: #0000ff">'Pragma: no-cache'</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: blue">header</span><span style="color: #009900">(</span><span style="color: #0000ff">'Expires: 0'</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="font-style: italic; color: #666666">// Send the file contents.</span>
<span style="color: blue">set_time_limit</span><span style="color: #009900">(</span><span style="color: #cc66cc">0</span><span style="color: #009900">)</span><span style="color: #339933">;</span>
<span style="color: blue">readfile</span><span style="color: #009900">(</span><span style="color: #000088">$file</span><span style="color: #009900">)</span><span style="color: #339933">;</span>

<span style="color: #000000; font-weight: bold">?></span></pre>
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