让mp3可寻址的PHP [英] Make mp3 seekable PHP
问题描述
我做了这个PHP脚本
$ file_name ='sample.mp3';
header（'Content-Type：audio / mpeg'）;
$ opts = array（'http'=>
array（
'method'=>'GET'，
'protocol_version'=> 1.1，
）
）;
$ context = stream_context_create（$ opts）;
$ stream = fopen（$ file_name，'rb'，FALSE，$ context）;
$ metadata = stream_get_meta_data（$ stream）;
$ data = stream_get_contents（$ stream）;
print（$ data）;
fclose（$ stream）;
它可以成功传输mp3媒体，但我无法寻找也在html5中播放的mp3文件 video 标记无法从中提取元数据，请告诉我我做错了什么地方，以及如何使此过程生效，谢谢
<这里试试这个，支持部分下载和寻找任何文件大小，现在也可以在chrome中正常工作：
<$
p $ p> <？php
$ file_name ='./sample.mp3';
流（$ file_name，'audio / mpeg'）;
$ b $ **
*流式文件处理程序
*
* @param字符串$ file_location
* @param头部|字符串$ content_type
* @return content
* /
函数流（$ file，$ content_type ='application / octet-stream'）{
@error_reporting（0）;
//确保文件存在，否则我们浪费时间
if（！file_exists（$ file））{
header（HTTP / 1.1 404 Not Found ）;
退出;
}
//获取文件大小
$ filesize = sprintf（％u，filesize（$ file））;
//处理'Range'头部
if（isset（$ _ SERVER ['HTTP_RANGE']））{
$ range = $ _SERVER ['HTTP_RANGE'];
} elseif（$ apache = apache_request_headers（））{
$ headers = array（）;
foreach（$ apache as $ header => $ val）{
$ headers [strtolower（$ header）] = $ val;
}
if（isset（$ headers ['range']））{
$ range = $ headers ['range'];
}
其他$ range = FALSE;
} else $ range = FALSE;
//是范围
if（$ range）{
$ partial = true;
list（$ param，$ range）= explode（'='，$ range）;
//错误请求 - 范围单元不是'字节'
if（strtolower（trim（$ param））！='bytes'）{
header（HTTP / 1.1 400无效的请求）;
退出;
}
//获取范围值
$ range = explode（'，'，$ range）;
$ range = explode（' - '，$ range [0]）;
//处理范围值
if（$ range [0] ===''）{
$ end = $ filesize - 1;
$ start = $ end - intval（$ range [0]）;
} else if（$ range [1] ===''）{
$ start = intval（$ range [0]）;
$ end = $ filesize - 1;
} else {
//两个数字都存在，返回特定范围
$ start = intval（$ range [0]）;
$ end = intval（$ range [1]）;
if（$ end> = $ filesize ||（！$ start&&（！$ end || $ end ==（$ filesize - 1））））$ partial = false; //指定的范围/整个文件无效，返回整个文件
}
$ length = $ end - $ start + 1;
}
//没有请求的范围
else $ partial = false;
//发送标准报头
header（Content-Type：$ content_type）;
header（Content-Length：。（$ partial？$ length：$ filesize））;
header（'Accept-Ranges：bytes'）;
//发送范围处理的额外头文件...
if（$ partial）{
header（'HTTP / 1.1 206 Partial Content'）;
header（Content-Range：bytes $ start- $ end / $ filesize）;
if（！$ fp = fopen（$ file，'rb'））{
header（HTTP / 1.1 500 Internal Server Error）;
退出;
}
if（$ start）fseek（$ fp，$ start）;
while（$ length）{
set_time_limit（0）;
$ read =（$ length> 8192）？ 8192：$ length;
$ length - = $ read;
print（fread（$ fp，$ read））;
}
fclose（$ fp）;
}
//只需发送整个文件
else readfile（$ file）;
退出;
}
？>
I did this PHP script
$file_name = 'sample.mp3';
header('Content-Type: audio/mpeg');
$opts = array('http' =>
array(
'method' => 'GET',
'protocol_version' => 1.1,
)
);
$context = stream_context_create($opts);
$stream = fopen($file_name, 'rb', FALSE, $context);
$metadata = stream_get_meta_data($stream);
$data = stream_get_contents($stream);
print($data);
fclose($stream);
It could stream mp3 media successfully but I'm not able to seek the mp3 file that get played also in html5 video tags are not able to extract metadata from it, please tell me where I'm doing wrong and how to make this process work, thanks
Here try this, supports partial downloads and seeking for any filesize, also now correctly works in chrome:
<?php
$file_name = './sample.mp3';
stream($file_name, 'audio/mpeg');
/**
* Stream-able file handler
*
* @param String $file_location
* @param Header|String $content_type
* @return content
*/
function stream($file, $content_type = 'application/octet-stream') {
@error_reporting(0);
// Make sure the files exists, otherwise we are wasting our time
if (!file_exists($file)) {
header("HTTP/1.1 404 Not Found");
exit;
}
// Get file size
$filesize = sprintf("%u", filesize($file));
// Handle 'Range' header
if(isset($_SERVER['HTTP_RANGE'])){
$range = $_SERVER['HTTP_RANGE'];
}elseif($apache = apache_request_headers()){
$headers = array();
foreach ($apache as $header => $val){
$headers[strtolower($header)] = $val;
}
if(isset($headers['range'])){
$range = $headers['range'];
}
else $range = FALSE;
} else $range = FALSE;
//Is range
if($range){
$partial = true;
list($param, $range) = explode('=',$range);
// Bad request - range unit is not 'bytes'
if(strtolower(trim($param)) != 'bytes'){
header("HTTP/1.1 400 Invalid Request");
exit;
}
// Get range values
$range = explode(',',$range);
$range = explode('-',$range[0]);
// Deal with range values
if ($range[0] === ''){
$end = $filesize - 1;
$start = $end - intval($range[0]);
} else if ($range[1] === '') {
$start = intval($range[0]);
$end = $filesize - 1;
}else{
// Both numbers present, return specific range
$start = intval($range[0]);
$end = intval($range[1]);
if ($end >= $filesize || (!$start && (!$end || $end == ($filesize - 1)))) $partial = false; // Invalid range/whole file specified, return whole file
}
$length = $end - $start + 1;
}
// No range requested
else $partial = false;
// Send standard headers
header("Content-Type: $content_type");
header("Content-Length: " . ($partial ? $length : $filesize));
header('Accept-Ranges: bytes');
// send extra headers for range handling...
if ($partial) {
header('HTTP/1.1 206 Partial Content');
header("Content-Range: bytes $start-$end/$filesize");
if (!$fp = fopen($file, 'rb')) {
header("HTTP/1.1 500 Internal Server Error");
exit;
}
if ($start) fseek($fp,$start);
while($length){
set_time_limit(0);
$read = ($length > 8192) ? 8192 : $length;
$length -= $read;
print(fread($fp,$read));
}
fclose($fp);
}
//just send the whole file
else readfile($file);
exit;
}
?>
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