很簡單的一個socket客戶端PHP類

php 5，需要打開socket擴展

//socke操作類
class Socket {
    private $host;//連接socket的主機
    private $port;//socket的端口號 
    private $error=array();
    private $socket=null;//socket的連接標識
    private $queryStr="";//發送的數據
    public function __construct($host,$port) {
        if(!extension_loaded("sockets")){
            exit("請打開socket擴展 ");
        }
        if(empty($host)) exit("請輸入目標地址");
        if(empty($port)) exit("請輸入有效的端口號");
        $this->host=$host;
        $this->port=$port;
        $this->CreateSocket();//創建連接

    }


//創建socket
private function CreateSocket(){
    !$this->socket&&$this->socket=socket_create(AF_INET, SOCK_STREAM, SOL_TCP);//創建socket
    $r=@socket_connect($this->socket,$this->host,$this->port);
    if($r){
        return $r;
    }else{
        $this->error[]=socket_last_error($this->socket);
        return false;
    }
}

//向socket服務器寫入數據并讀取
public function wr($contents){
    $this->queryStr="";
    $this->queryStr=$contents;
    !$this->socket&&$this->CreateSocket();
    $contents=$this->fliterSendData($contents);
    $result=socket_write($this->socket,$contents,strlen($contents));
    if(!intval($result)){
        $this->error[]=socket_last_error($this->socket);
        return false;
    }
    $response=socket_read($this->socket,12048);
    if(false===$response){
        $this->error[]=socket_last_error($this->socket);
        return false;
    }
    return $response;
}


//對發送的數據進行過濾
private function fliterSendData($contents){
    //對寫入的數據進行處理
    return $contents;
}


//所有錯誤信息 
public function getError(){
    return $this->error;
}

//最后一次錯誤信息
public function getLastError(){
    return $this->error(count($this->error));
}
//獲取最后一次發送的消息
public function getLastMsg(){
    return $this->queryStr;
}

public function getHost(){
    return $this->host;
}

public function getPort(){
    return $this->port;
}

//關閉socket連接
private function close(){
    $this->socket&&socket_close($this->socket);//關閉連接
    $this->socket=null;//連接資源初始化
}

public function __destruct(){
    $this->close();
}

}</pre>