php有什么用

php是一个嵌套的缩写名称，是英文超级文本预处理语言，它的语法混合了C、Java、Perl以及php自创新的语法，主要用来做网站开发，许多小型网站都用php开发，因为php是开源的，从而使得php经久不衰。

服务器端：

复制代码 代码如下:

set_time_limit(10);
//* 设置不显示任何错误 */
//error_reporting(0);

function varinfo($str) {
echo "

";
var_dump($str);
echo "
";
}
$commonProtocol = getprotobyname("tcp");
$socket = socket_create(AF_INET, SOCK_STREAM, $commonProtocol);
if ($socket) {
$result = socket_bind($socket, '192.168.3.57', 1337);
if ($result) {
   $result = socket_listen($socket, 5);
   if ($result) {
    echo "监听成功";
   }
}
}else{
echo "监听失败";
}
//$path = "/home/upload/";
$path = "e://web//";
while (true)   {   
$connection = socket_accept($socket);
if($connection){   
   $msg = "telnet succeed!\r\n";
   socket_write($connection, $msg, strlen($msg)); 

     $BufferPond = array();   
     $buffer = '';
     while($flag = socket_recv($connection, $buffer, 1024, 0)){    
          if (false !== strpos($buffer,'filename:')){   
             $filename = substr($buffer,9);
             $filename = $path.$filename;
             $fp = fopen($filename,"wb");
             continue;    
          }    
        fwrite($fp,$buffer);
     }
     fclose($fp);
     socket_close($connection);    
}    
}    
socket_close($socket);   
?>

客户端：
复制代码 代码如下:

$errno='001';
$errstr="socket file error";
$fp = fsockopen("192.168.3.57", 1337, $errno, $errstr, 10);
if (!$fp) {    
    echo "$errstr ($errno)
\n";    
} else {    
    $str = "filename:socket_file.bmp";    
    fwrite($fp, $str);    $out = file_get_contents('../../iphone3G.bmp');    
   if($out){
    fwrite($fp, $out);    
    fwrite($fp,'over');
   echo "上传成功";
   }

}
fclose($fp);
?>