在网站开发中我们会经常用到文件下载，所以备用了几个php的文件下载函数已备日后使用，文件名中文会出现问题。
第一个案例
<?php
function path_info($filepath)
{
$path_parts = array();
$path_parts ['dirname'] = rtrim(substr($filepath, 0, strrpos($filepath, '/')),"/")."/";
$path_parts ['basename'] = ltrim(substr($filepath, strrpos($filepath, '/')),"/");
$path_parts ['extension'] = substr(strrchr($filepath, '.'), 1);
$path_parts ['filename'] = ltrim(substr($path_parts ['basename'], 0, strrpos($path_parts ['basename'], '.')),"/");
return $path_parts;
}
function download($file,$name=''){
$fileName = $name ? iconv("GBK","UTF-8",$name): pathinfo($file,PATHINFO_FILENAME);
//echo $fileName;exit;
$filePath = realpath($file);
$fp = fopen($filePath,'rb');
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if(!$filePath || !$fp){
header('HTTP/1.1 404 Not Found');
echo "Error: 404 Not Found.(server file path error)<!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!--
Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding --><!-- Padding -->";
exit;
}
$fileName = $fileName .'.'. pathinfo($filePath,PATHINFO_EXTENSION);
$encoded_filename = urlencode($fileName);
$encoded_filename = str_replace("+", "%20", $encoded_filename);
header('HTTP/1.1 200 OK');
header( "Pragma: public" );
header( "Expires: 0" );
header("Content-type: application/octet-stream");
header("Content-Length: ".filesize($filePath));
header("Accept-Ranges: bytes");
header("Accept-Length: ".filesize($filePath));
$ua = $_SERVER["HTTP_USER_AGENT"];
if (preg_match("/MSIE/", $ua)) {
header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
} else if (preg_match("/Firefox/", $ua)) {
header('Content-Disposition: attachment; filename*="utf8\'\'' . $fileName . '"');
} else {
header('Content-Disposition: attachment; filename="' . $fileName . '"');
}
// ob_end_clean(); <--有些情况可能需要调用此函数
// 输出文件内容
fpassthru($fp);
exit;
}
?>
第二个案例
function httpcopy($url, $file="", $timeout=60) {
$file = empty($file) ? pathinfo($url,PATHINFO_BASENAME) : $file;
$dir = pathinfo($file,PATHINFO_DIRNAME);
!is_dir($dir) && @mkdir($dir,0755,true);
$url = str_replace(" ","%20",$url);
if(function_exists('curl_init')) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
$temp = curl_exec($ch);
if(@file_put_contents($file, $temp) && !curl_error($ch)) {
return $file;
} else {
return false;
}
} else {
$opts = array(
"http"=>array(
"method"=>"GET",
"header"=>"",
"timeout"=>$timeout)
);
$context = stream_context_create($opts);
if(@copy($url, $file, $context)) {
//$http_response_header
return $file;
} else {
return false;
}
}
}
