function video_info($file,$ffmpeg) {
    ob_start();
    passthru(sprintf($ffmpeg.' -i "%s" 2>&1', $file));
    $info = ob_get_contents();
    ob_end_clean();
  // 通过使用输出缓冲，获取到ffmpeg所有输出的内容。
   $ret = array();
    // Duration: 01:24:12.73, start: 0.000000, bitrate: 456 kb/s
    if (preg_match("/Duration: (.*?), start: (.*?), bitrate: (\d*) kb\/s/", $info, $match)) {
        $ret['duration'] = $match[1]; // 提取出播放时间
        $da = explode(':', $match[1]); 
        $ret['seconds'] = $da[0] * 3600 + $da[1] * 60 + $da[2]; // 转换为秒
        $ret['start'] = $match[2]; // 开始时间
        $ret['bitrate'] = $match[3]; // bitrate 码率 单位 kb
    }

    // Stream #0.1: Video: rv40, yuv420p, 512x384, 355 kb/s, 12.05 fps, 12 tbr, 1k tbn, 12 tbc
    if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match)) {
        $ret['vcodec'] = $match[1]; // 编码格式
        $ret['vformat'] = $match[2]; // 视频格式 
        $ret['resolution'] = $match[3]; // 分辨率
        $a = explode('x', $match[3]);
        $ret['width'] = $a[0];
        $ret['height'] = $a[1];
    }

    // Stream #0.0: Audio: cook, 44100 Hz, stereo, s16, 96 kb/s
    if (preg_match("/Audio: (\w*), (\d*) Hz/", $info, $match)) {
        $ret['acodec'] = $match[1];       // 音频编码
        $ret['asamplerate'] = $match[2];  // 音频采样频率
    }

    if (isset($ret['seconds']) && isset($ret['start'])) {
        $ret['play_time'] = $ret['seconds'] + $ret['start']; // 实际播放时间
    }

    $ret['size'] = filesize($file); // 文件大小
    return $ret;
}

在表单提交按钮之前添加如下代码：

<?php echo \yii\helpers\Html::hiddenInput(Yii::$app->request->csrfParam, Yii::$app->request->getCsrfToken()) ?>

apache虚拟主机配置文件示例

<VirtualHost *:80>
 ServerName  test.com
 DocumentRoot  "d:\www\test"  
 DirectoryIndex   index.php
 <Directory "d:\www\qlmall">
     Options +FollowSymLinks
     Order Allow,Deny
     allow from all
     AllowOverride All
 </Directory>
</VirtualHost>

nginx配置文件示例

server {
    server_name test.com;
    listen 80;
    root /data/webroot/test;

        location = /favicon.ico {
                log_not_found off;
                access_log off;
        }

        location = /robots.txt {
                allow all;
                log_not_found off;
                access_log off;
        }

        location / {
            index index.php index.html index.htm;
                # This is cool because no php is touched for static content.
                # include the "?$args" part so non-default permalinks doesn't break when using query string
                try_files $uri $uri/ /index.php?$args;
        }

        location ~ \.php$ {
                #NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
                include fastcgi.conf;
                fastcgi_intercept_errors on;
            fastcgi_pass 127.0.0.1:9000;
        }

        location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
                expires max;
                log_not_found off;
        }

    error_log /var/log/nginx/test.com.error.log;
    access_log /var/log/nginx/test.com.access.log;
}

function download($file)
{
    $fp = @fopen($file, 'rb');
    $size   = filesize($file); // File size
    $length = $size;           // Content length
    $start  = 0;               // Start byte
    $end    = $size - 1;       // End byte
    header('Content-type: octet-stream');
    header("Accept-Ranges: 0-$length");
    if (isset($_SERVER['HTTP_RANGE'])) {
        $cStart = $start;
        $cEnd   = $end;
        list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
        if (strpos($range, ',') !== false) {
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $start-$end/$size");
            exit;
        }
        if ($range == '-') {
            $cStart = $size - substr($range, 1);
        }else{
            $range  = explode('-', $range);
            $cStart = $range[0];
            $cEnd   = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
        }
        $cEnd = ($cEnd > $end) ? $end : $cEnd;
        if ($cStart > $cEnd || $cStart > $size - 1 || $cEnd >= $size) {
            header('HTTP/1.1 416 Requested Range Not Satisfiable');
            header("Content-Range: bytes $start-$end/$size");
            exit;
        }
        $start  = $cStart;
        $end    = $cEnd;
        $length = $end - $start + 1;
        fseek($fp, $start);
        header('HTTP/1.1 206 Partial Content');
    }
    header("Content-Range: bytes $start-$end/$size");
    header("Content-Length: " . $length);
    $buffer = 1024 * 8;
    while(!feof($fp) && ($p = ftell($fp)) <= $end) {
        if ($p + $buffer > $end) {
            $buffer = $end - $p + 1;
        }
        set_time_limit(0);
        echo fread($fp, $buffer);
        flush();
    }
    fclose($fp);
    exit();
}

准备环境(php7+laravel)

-> composer create-project --prefer-dist laravel/laravel laravel-dingo`

安装dingo

-> composer require dingo/api:1.0.x@dev

编辑app/config.php、在provider配置块里注册dingo包到laravel框架中

Laravel\Tinker\TinkerServiceProvider::class,
Dingo\Api\Provider\LaravelServiceProvider::class,
```php
在config目录生成dingo的配置配置文件
```shell
-> php artisan vendor:publish --provider="Dingo\Api\Provider\LaravelServiceProvider"

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        // -------------- 全局变量，用来判断文本域中是否包含脏词,默认为false,即不包含脏词-------
        var isDirty = false;
     //读取本地dirtyword词库   
    function readFile(filename){
    /*函数编辑区*/
        try {
            var fso = new ActiveXObject("Scripting.FileSystemObject");
            var file = fso.OpenTextFile(filename, 1);
            var fileContent = file.ReadAll();
            file.Close();
            return fileContent.split(' ');
        } catch (e) {
            alert('请开启ActiveX'); 
        }
    }

    

        /*
        * 提交表单的主方法
        * 在提交表单的时候对内容进行过滤并在文本域显示过滤后的内容
        */
        function submitForm1() {
            /*函数编辑区*/
            var messageValue = document.getElementById('message').value;
            messageValue = filterWord(messageValue);
            if (isDirty) {
            alert(messageValue);
                document.getElementById('message').value = messageValue;
                if (confirm('你的留言中含有不恰当的词语,系统已自动为你修改,是否继续提交?')) {
                    return true;
                }
                return false;
            }
            return true;
        }
        /*
        * 对传进来的messageValue过滤并返回新内容
        
        */
        function filterWord(messageValue) {
            // 根据文本域的id获取文本域对象内容
            /*函数编辑区*/
            var dirtyWords = readFile('c:/ciku.txt');
            for (var i = 0; i < dirtyWords.length; i++) {
                isDirty = true;
                messageValue = filterOneWord(messageValue, dirtyWords[i]);
            }
            return messageValue;
        }
        /*
        * 这个函数用来过滤单个词语, 如果messageValue中含有oneDirtyWord, 则用"**"替换这个oneDirtyWord
        * messageValue --- 要过滤的语句

        */
        function filterOneWord(messageValue, oneDirtyWord) {
        /*函数编辑区*/
        var regexp = new RegExp(oneDirtyWord,  'gi');
        return messageValue.replace(regexp, '**');
        }
 </script>
</head>
<body>
    <form name="message_board" id="message_board" action="aaa.html">
        <textarea name="message" id="message" cols="50" rows="10">
"In a world that's changing really quickly, the biggest risk is not taking any risk."
—— Mark Zuckerberg
        </textarea><br/>
        <input type="button" value="提交留言" id="submitMessage" onclick="submitForm1()"/>
    </form>
</body>
</html>

第一种解法

function findParentNode($nodes, $id)
{
    foreach ($nodes as $node) {
        if (in_array($id, $node['childrens'])) {
            return $node;
        }
    }
    return false;
}

function minimum2($nodes, $from, $to)
{
    $fromToTop = array($from);
    while ($parentNode = findParentNode($nodes, $from)) {
        $fromToTop[] = $parentNode['id'];
        $from = $parentNode['id'];
    }
    $toToTop = array($to);
    while ($parentNode = findParentNode($nodes, $to)) {
        $fromToTop[] = $parentNode['id'];
        $to = $parentNode['id'];
    }
    $path = false;
    $fromPath = array();
    $toPath = array();
    $countf = count($fromToTop);
    $countt = count($toToTop);
    for ($i=0; $i < $countf; $i++) {
        $fromPath[] = $fromToTop[$i];
        for ($j=0; $j < $countt; $j++) { 
            $toPath[] = $toToTop[$j];
            if ($fromToTop[$i] == $toToTop[$j]) {
                // 共同点。
                // 去掉一个共同点
                array_pop($fromPath);
                $path = implode('=>', $fromPath) . '=>' . implode('=>', $toPath);
                break 2;
            }
        }
        $toPath = array();
    }
    return $path;
}

第二种解法

function findParentNode($nodes, $id)
{
    foreach ($nodes as $node) {
        if (in_array($id, $node['childrens'])) {
            return $node;
        }
    }
    return false;
}

function minimum($nodes, $from, $to, $path = '', $tryParent = true)
{
    static $finds = array();
    static $excludeIds = array();
    if ($from == $to) {
        $path = $path . $from;
        $finds[] = $path;
        return $finds;
    }
    $path = $path . $from . '=>';

    $startNode = $nodes[$from];
    // 在子节点中找
    foreach ($startNode['childrens'] as $childId) {
        if (in_array($childId, $excludeIds)) {
            continue;
        }
        $childNode = $nodes[$childId];
        minimum($nodes, $childNode['id'], $to, $path, false);
    }

    $parentNode = findParentNode($nodes, $startNode['id']);
    $excludeIds[] = $startNode['id'];
    if ($tryParent && $parentNode) {
        minimum($nodes, $parentNode['id'], $to, $path, true);
    }

    usort($finds, function($a, $b) {
        $strLenA = strlen($a);
        $strLenB = strlen($b);
        if ($strLenA == $strLenB) {
            return 0;
        }
        return ($strLenA < $strLenB) ? -1 : 1;
    });
    return isset($finds[0]) ? $finds[0] : false;
}

测试

$nodes=array(
    array(
        'id' => 'A',
        'childrens' => array('B', 'C', 'D'),
    ),
    array(
        'id' => 'B',
        'childrens' => array('E', 'F', 'G'),
    ),
    array(
        'id' => 'C',
        'childrens' => array(),
    ),
    array(
        'id' => 'D',
        'childrens' => array('H', 'I', 'J'),
    ),
    array(
        'id' => 'E',
        'childrens' => array(),
    ),
    array(
        'id' => 'F',
        'childrens' => array('K', 'L', 'N'),
    ),
    array(
        'id' => 'G',
        'childrens' => array(),
    ),
    array(
        'id' => 'H',
        'childrens' => array('O', 'P', 'Q'),
    ),
    array(
        'id' => 'I',
        'childrens' => array(),
    ),
    array(
        'id' => 'J',
        'childrens' => array(),
    ),
    array(
        'id' => 'K',
        'childrens' => array(),
    ),
    array(
        'id' => 'L',
        'childrens' => array(),
    ),
    array(
        'id' => 'N',
        'childrens' => array('R', 'S', 'T'),
    ),
    array(
        'id' => 'O',
        'childrens' => array(),
    ),
    array(
        'id' => 'P',
        'childrens' => array(),
    ),
    array(
        'id' => 'Q',
        'childrens' => array(),
    ),
    array(
        'id' => 'R',
        'childrens' => array(),
    ),
    array(
        'id' => 'S',
        'childrens' => array(),
    ),
    array(
        'id' => 'T',
        'childrens' => array(),
    ),
);
$idNodeMap = array();
foreach($nodes as $key => $value) {
    $idNodeMap[$value['id']] = $value;
}

var_dump(minimum($idNodeMap, 'T', 'A'));
var_dump(minimum2($idNodeMap, 'T', 'A'));