js + php 读取、播放视频流 兼容firefox，chrome ie mac的safari

1、选用jwplayer6作为前端播放器

2、前端动态加载jwplayer视频盒子

3、前端加载的视频非视频的物理地址，而是通过php读取的视频流

4、php通过curl方式读取的视频流

加载视频盒子的部分js代码

function load_video_player(width,height,fileid,type,title,size){
	var player_w = width;
	var player_h = height;
	var isiphone;
	$.ajax({
		type: 'POST',
		url: 'devicecontroller.php',
		data: 'islink='+islink,
		dataType:"JSON",
		async: false,
		success:function(data){
			if(data.code == 1){
				isiphone = data.data;
			}else{
				isiphone = 0;
			}
		}
	});
	
	var file_path = '/XXX/url?fileid='+fileid+'&type='+type+'&title='+title+'&size='+size+'&isiphone='+isiphone;
	
	var player_wrap = [
		'<div id="J_video_container" class="video_container hide">',
			'<div class="video_box">',
			'</div>',
		'</div>'
	].join('');
	
	var player_box = [
		'<div id="Jwplayer_box">Loading player...</div>'
	].join('');
 
	if($('#J_video_container').length==0){
		$('#J_video_main').append(player_wrap);
	}
	
	$('#J_video_container').css('height',player_h+'px');
	if($('#Jwplayer_box').length==0){
		$('#J_video_container .video_box').append(player_box);
	}
	$('.video_box').css({'width':player_w+'px','height':player_h+'px'});
	$('#J_video_container').show();
	
	jwplayer("Jwplayer_box").setup({
		'width': player_w,
		'height': player_h,
		'controlbar': 'bottom',
		"autostart":"true",
		'provider': 'video',
		'type': 'mp4',
		'file': file_path
	});
}

其中请求检查设备和浏览器类型的devicecontroller.php代码

//json_encode中文乱码问题修正
function arrayRecursive(&$array){ 
	foreach ($array as $key => $value) { 
		if (is_array($value)) { 
			arrayRecursive($array[$key]);//如果是数组就进行递归操作 
		} else { 
			if(is_string($value)){ 
				$temp1= addslashes($value);
				$array[$key]= urlencode($temp1);//如果是字符串就urlencode 
			}else{ 
				$array[$key] = $value; 
			} 
		} 
	} 
} 
function JSON($result) { 
	$array=$result; 
	arrayRecursive($array);//先将类型为字符串的数据进行 urlencode 
	$json = json_encode($array);//再将数组转成JSON 
	return urldecode($json);//最后将JSON字符串进行urldecode 
}
 
require_once("Mobile_Detect.php");
$detect = new Mobile_Detect(); 
if($detect->isiPhone() || $detect->isiPad()){
	if($detect->isSafari()|| $detect->isGenericBrowser()){//iphone和ipad上的safari或者微信浏览器
		$iphone = 1;
	}else{
		$iphone = 0;
	}
}else{
	$iphone = 0;
}
$data['code']=1;
$data['data']=$iphone;
echo JSON($data);

加载视频流的php

session_start();
 
$fileid = $_GET['fileid'];
$isiphone = $_GET['isiphone'];
$file_name = $_GET['title'];
$file_type = $_GET['type'];
$file_size = $_GET['size'];
 
$cookie = $_SESSION['token'];	
 
//如果没有文件名，设置带扩展名的默认文件名
if(empty($file_name)){
	$type = substr($file_type,0,5);
	if($type == "video"){
		$type = substr($file_type,6);
		$file_name = "downfile.".$type;
	}
}
 
header("Content-type: ".$file_type);
if(isset($_SERVER['HTTP_RANGE'])){
	
	$http_range = $_SERVER['HTTP_RANGE'];
	
	$at = explode('=',$http_range);
	$at = explode('-',$at[1]);
	$start = $at[0];
	if($at[1]==null){
		$end = $file_size - 1;
	}else{
		$end = $at[1];
	}
	$length = $end - $start + 1;
 
	if($isiphone!=1){
		$url = "/XXX/url/".$fileid;
	
		$curl = curl_init();
		curl_setopt($curl, CURLOPT_URL, $url); 
		curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // 对认证证书来源的检查 
		curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); // 从证书中检查SSL加密算法是否存在 	
		curl_setopt($curl, CURLOPT_HEADER, 0); 
		curl_setopt($curl, CURLOPT_TIMEOUT, 30);
		curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
		curl_setopt($curl, CURLOPT_HTTPHEADER, Array($cookie));
		
		header('Expires: 0');
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Pragma: public');
		header("Content-Description: File Transfer");
		header("Content-Transfer-Encoding: binary");
		Header("Content-type: ".$file_type);
		Header('Content-Disposition: attacurlment; filename="'.$file_name.'"');
		Header("Content-Length: ".$file_size);
		ob_end_flush();
		flush();
		
		$result = curl_exec($curl);		
		curl_close($curl);
	}else{
	
		header("Accept-Ranges: 0-$length");
		
		set_time_limit(0);
		
		header("Content-Range: bytes $start-$end/$file_size");
		header("Content-Length: $length");
 
	
		$url2 = "/XXX/url/".$fileid;
		
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL,$url2);
		
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_HEADER, false);
		
		curl_setopt($ch, CURLOPT_HTTPHEADER, Array($cookie));
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // 对认证证书来源的检查 
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); // 从证书中检查SSL加密算法是否存在 
		
		curl_setopt($ch, CURLOPT_TIMEOUT, 600); 
 
		$content = curl_exec($ch);
		curl_close($ch);
		
		$output = substr($content,$start,$length);
		
		echo $output;
 
		exit;
	}
 
}else{
	$url = "/XXX/url/".$fileid;
	
	$curl = curl_init();
	curl_setopt($curl, CURLOPT_URL, $url); 
	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // 对认证证书来源的检查 
	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); // 从证书中检查SSL加密算法是否存在 	
	curl_setopt($curl, CURLOPT_HEADER, 0); 
	curl_setopt($curl, CURLOPT_TIMEOUT, 30);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, false);
	curl_setopt($curl, CURLOPT_HTTPHEADER, Array($cookie));
	
	header('Expires: 0');
	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
	header('Pragma: public');
	header("Content-Description: File Transfer");
	header("Content-Transfer-Encoding: binary");
	Header("Content-type: ".$file_type);
	Header('Content-Disposition: attacurlment; filename="'.$file_name.'"');
	Header("Content-Length: ".$file_size);
	ob_end_flush();
	flush();
	
	$result = curl_exec($curl);		
	curl_close($curl);
}

补充说明：

1、在js中请求判断一次设备，并通过js传递给php读取视频流，而不是在php端读取视频流时每次判断设备：

因为ios safari在第一次（会设定$_SERVER['HTTP_RANGE']）请求的时候，能判断出是ios的safari设备

在第二次以及之后的请求时，无法判断出是ios的safari设备

2、判断是否是ios的safari，在之后的文章中介绍