套接字php，php，慢速套接字，最好执行套接字。

Question

我创建了一个从PLC读取值的示例。当我使用一个函数套接字时，php页面工作得很好，但是当我放置两个或多个函数套接字时，我需要大约20个20secundes来打开一个php。

我可以改进我的代码，或者php中的套接字是这样的？

他的密码是：

<?php
    $dados_recebidos = analisa_dados_dos_turnos($host, $port);
    $ranking = prioridade_dos_turnos($host, $port);
?>
<?php
    function  analisa_dados_dos_turnos($host, $port)
    {   
        $message = "01ff000a4420000002583f00"; // D600 a D662
        $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create socket\n");     
        $result = socket_connect($socket, $host, $port) or die("Could not connect to server\n");        
        socket_write($socket, $message, strlen($message)) or die("Could not send data to server\n");        
        $result = socket_read ($socket, 1024) or die("Could not read server response\n");       
        socket_shutdown($socket);   
        return $result;
    }
    function prioridade_dos_turnos($host, $port)
    {   
        $message = "01ff000a4420000004291000"; // D1065 a D1079
        $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create socket\n");     
        $result = socket_connect($socket, $host, $port) or die("Could not connect to server\n");        
        socket_write($socket, $message, strlen($message)) or die("Could not send data to server\n");        
        $result = socket_read ($socket, 2048) or die("Could not read server response\n");       
        //socket_shutdown($socket); 
        return $result;
    }
?>

Answer 1

如果您多次重复analisa_dados_dos_turnos()，情况是否相同？

我不是套接字专家，但我会尝试添加一些时间计数代码，看看是哪个部分导致了延迟。

    $start_time = microtime(TRUE);
     //DO SOMETHING
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>Elapsed Time: '.$elapsedtime; 

例如，你可以

    $start_time = microtime(TRUE);
    $dados_recebidos = analisa_dados_dos_turnos($host, $port);
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>dados_recebidos 1 Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);
    $dados_recebidos = analisa_dados_dos_turnos($host, $port);
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>dados_recebidos 2 Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);
    $ranking = prioridade_dos_turnos($host, $port);
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>ranking 1 Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);
    $ranking = prioridade_dos_turnos($host, $port);
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>ranking 2 Elapsed Time: '.$elapsedtime;

把它分解得更深，试试这个

     function prioridade_dos_turnos($host, $port)
{   
    $message = "01ff000a4420000004291000"; // D1065 a D1079

    $start_time = microtime(TRUE);
    $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("Could not create socket\n"); 
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>socket_create Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);
    $result = socket_connect($socket, $host, $port) or die("Could not connect to server\n");
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>socket_connect Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);
    socket_write($socket, $message, strlen($message)) or die("Could not send data to server\n");
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>socket_write Elapsed Time: '.$elapsedtime;

    $start_time = microtime(TRUE);        
    $result = socket_read ($socket, 2048) or die("Could not read server response\n");
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>socket_read Elapsed Time: '.$elapsedtime; 

    $start_time = microtime(TRUE);       
    socket_shutdown($socket);
    $stop_time = microtime(TRUE);
    $elapsedtime = $stop_time - $start_time;
    echo '<BR>socket_shutdown Elapsed Time: '.$elapsedtime;         
    return $result;
}