mpi.inc.php函數說明：1、構造函數PushInitiator()Function Prototype:PushInitiator() -- 初始化時不傳遞任何參數，采用默認的PPG來發送PushInitiator($ppg_url) -- 傳遞一個參數，以http://www.ppg.com:port/uri的形式PushInitiator($ppg_ip,$ppg_port,$ppg_url) -- 傳遞三個參數，分別是PPG IP地址、PPG端口、PPG處理的URL            $strget = "";            // 設置讀取超時時間            stream_set_timeout($fp, 5);            // 讀 HTTP 頭部信息            while(!feof($fp))            {                $ls_Str = fgets($fp,1024);                if( !trim($ls_Str) )                {                    break;                }                $pos = strpos( $ls_Str, ": " );                $sso_headers[ substr($ls_Str,0,$pos) ] = substr($ls_Str,$pos+2);                $stream_status = stream_get_meta_data($fp);                if( $stream_status["timed_out"]==true )                {                    $other_error_info = join( "\n", $sso_headers );                    error_and_exit( "&#x670d;&#x52a1;&#x5668;&#x7e41;&#x5fd9;&#xff0c;&#x8bf7;&#x7a0d;&#x540e;&#x518d;&#x8bd5;&#x3002;." );                }            }            // 按長度讀取            if( $sso_headers["Content-Length"] )            {                $strget = fread( $fp, intval($sso_headers["Content-Length"]) );                $stream_status = stream_get_meta_data($fp);                if( $stream_status["timed_out"]==true )                {                    $other_error_info = $strget;                    error_and_exit( "&#x670d;&#x52a1;&#x5668;&#x7e41;&#x5fd9;&#xff0c;&#x8bf7;&#x7a0d;&#x540e;&#x518d;&#x8bd5;&#x3002;.." );                }            }            // 一個字節一個字節的讀            else            {                while(!feof($fp))                {                    $ls_Str = fread($fp,1);                    $strget .= $ls_Str;                    if( strstr($strget,"</misc_command>") )                    {                        break;                    }                    $stream_status = stream_get_meta_data($fp);                    if( $stream_status["timed_out"]==true )                    {                        $other_error_info = $strget;                        error_and_exit( "&#x670d;&#x52a1;&#x5668;&#x7e41;&#x5fd9;&#xff0c;&#x8bf7;&#x7a0d;&#x540e;&#x518d;&#x8bd5;&#x3002;..." );                    }                }            }            fclose($fp);