这篇文章主要介绍了php readfile下载大文件失败的解决方法,涉及php针对大文件的分割及逐块下载操作实现技巧,需要的朋友可以参考下
具体如下:
大文件有200多M,只下载了200K就提示下载完成,且不报错。
原因是PHP内存有限制,需要改为按块下载,就是把大文件切块后逐块下载。
if (file_exists($file))
{
if (FALSE!== ($handler = fopen($file, 'r')))
{
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($file));
header('Content-Transfer-Encoding: chunked'); //changed to chunked
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
//header('Content-Length: ' . filesize($file)); //Remove
//Send the content in chunks
while(false !== ($chunk = fread($handler,4096)))
{
echo $chunk;
}
}
exit;
}
echo "<h1>Content error</h1><p>The file does not exist!</p><div class="aritcle_card flexRow">
<div class="artcardd flexRow">
<a class="aritcle_card_img" href="/ai/920" title="Flowith"><img
src="https://img.php.cn/upload/ai_manual/000/000/000/175679997048461.png" alt="Flowith" onerror="this.onerror='';this.src='/static/lhimages/moren/morentu.png'" ></a>
<div class="aritcle_card_info flexColumn">
<a href="/ai/920" title="Flowith">Flowith</a>
<p>一款GPT4驱动的节点式 AI 创作工具</p>
</div>
<a href="/ai/920" title="Flowith" class="aritcle_card_btn flexRow flexcenter"><b></b><span>下载</span> </a>
</div>
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