PHP學習
<?php 
/** 
 * File name server.php 
 * 服務器端代碼 
 * 
 * @author guisu.huang 
 * @since 2012-04-11 
 * 
 */ 
 
//確保在連接客戶端時不會超時 
set_time_limit(0); 
//設置IP和端口號 
$address = "127.0.0.1"; 
$port = 2046; //調試的時候,可以多換端口來測試程序! 
/** 
 * 創建一個SOCKET 
 * AF_INET=是ipv4 如果用ipv6,則參數為 AF_INET6 
 * SOCK_STREAM為socket的tcp類型,如果是UDP則使用SOCK_DGRAM 
*/ 
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); 
//阻塞模式 
socket_set_block($sock) or die("socket_set_block() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); 
//綁定到socket端口 
$result = socket_bind($sock, $address, $port) or die("socket_bind() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); 
//開始監聽 
$result = socket_listen($sock, 4) or die("socket_listen() 失敗的原因是:" . socket_strerror(socket_last_error()) . "/n"); 
echo "OK\nBinding the socket on $address:$port ... "; 
echo "OK\nNow ready to accept connections.\nListening on the socket ... \n"; 
do { // never stop the daemon 
 //它接收連接哀求并調用一個子連接Socket來處理客戶端和服務器間的信息 
 $msgsock = socket_accept($sock) or die("socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n"); 
  
 //讀取客戶端數據 
 echo "Read client data \n"; 
 //socket_read函數會一直讀取客戶端數據,直到遇見\n,\t或者\0字符.PHP腳本把這寫字符看做是輸入的結束符. 
 $buf = socket_read($msgsock, 8192); 
 echo "Received msg: $buf \n"; 
  
 //數據傳送 向客戶端寫入返回結果 
 $msg = "welcome \n"; 
 socket_write($msgsock, $msg, strlen($msg)) or die("socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n"); 
 //一旦輸出被返回到客戶端,父/子socket都應通過socket_close($msgsock)函數來終止 
 socket_close($msgsock); 
} while (true); 
socket_close($sock); 

PHP學習
<?php 
/** 
 * File name:client.php 
 * 客戶端代碼 
 * 
 * @author guisu.huang 
 * @since 2012-04-11 
 */ 
set_time_limit(0); 
 
$host = "127.0.0.1"; 
$port = 2046; 
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)or die("Could not create socket\n"); // 創立一個Socket 
 
$connection = socket_connect($socket, $host, $port) or die("Could not connet server\n"); // 連接 
socket_write($socket, "hello socket") or die("Write failed\n"); // 數據傳送 向服務器發送消息 
while ($buff = socket_read($socket, 1024, PHP_NORMAL_READ)) { 
 echo("Response was:" . $buff . "\n"); 
} 
socket_close($socket); 

PHP學習
/* {{{ proto resource socket_create(int domain, int type, int protocol) U 
 Creates an endpoint for communication in the domain specified by domain, of type specified by type */ 
PHP_FUNCTION(socket_create) 
{ 
  long   arg1, arg2, arg3; 
  php_socket  *php_sock = (php_socket*)emalloc(sizeof(php_socket)); 
 
  if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &arg1, &arg2, &arg3) == FAILURE) { 
    efree(php_sock); 
    return; 
  } 
 
  if (arg1 != AF_UNIX 
#if HAVE_IPV6 
    && arg1 != AF_INET6 
#endif 
    && arg1 != AF_INET) { 
    php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid socket domain [%ld] specified for argument 1, assuming AF_INET", arg1); 
    arg1 = AF_INET; 
  } 
 
  if (arg2 > 10) { 
    php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid socket type [%ld] specified for argument 2, assuming SOCK_STREAM", arg2); 
    arg2 = SOCK_STREAM; 
  } 
 
  php_sock->bsd_socket = socket(arg1, arg2, arg3); 
  php_sock->type = arg1; 
 
  if (IS_INVALID_SOCKET(php_sock)) { 
    SOCKETS_G(last_error) = errno; 
    php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to create socket [%d]: %s", errno, php_strerror(errno TSRMLS_CC)); 
    efree(php_sock); 
    RETURN_FALSE; 
  } 
 
  php_sock->error = 0; 
  php_sock->blocking = 1; 
                                   1257,1-8  61% 
  ZEND_REGISTER_RESOURCE(return_value, php_sock, le_socket); 
} 

PHP進修
//初始化Socket  
 if( (socket_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1 ){ 
   printf("create socket error: %s(errno: %d)\n",strerror(errno),errno); 
   exit(0); 
 }

PHP學習
/** 
 * 
 * @param $data= array=array('key'=>value) 
 */ 
function post_contents($data = array()) { 
 $post = $data ? http_build_query($data) : ''; 
 $header = "POST /test/ HTTP/1.1" . "\n"; 
 $header .= "User-Agent: Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.1;+SV1)" . "\n"; 
 $header .= "Host: localhost" . "\n"; 
 $header .= "Accept: */*" . "\n"; 
 $header .= "Referer: http://localhost/test/" . "\n"; 
 $header .= "Content-Length: ". strlen($post) . "\n"; 
 $header .= "Content-Type: application/x-www-form-urlencoded" . "\n"; 
 $header .= "\r\n"; 
 $ddd = $header . $post; 
 $fp = stream_socket_client("tcp://localhost:80", $errno, $errstr, 30); 
 $response = ''; 
 if (!$fp) { 
  echo "$errstr ($errno)<br />\n"; 
 } else { 
  fwrite($fp, $ddd); 
  $i = 1; 
  while ( !feof($fp) ) { 
   $r = fgets($fp, 1024); 
   $response .= $r; 
   //處理這一行 
  } 
 } 
 fclose($fp); 
 return $response; 
} 

PHP學習
while ( !feof($fp) ) { 
 $r = fgets($fp, 1024); 
 $response .= $r; 
} 

PHP學習
$fp = fopen("myfile.txt", "r"); 
while (!feof($fp)) { 
 $current_line = fgets($fp); 
 //對成果做進一步處理,防止進入死循環 
}