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經(jīng)常有朋友會(huì)對(duì)php的socket應(yīng)用充滿(mǎn)疑惑，本文就以實(shí)例代碼作一講解，希望能對(duì)初學(xué)php的朋友起到一點(diǎn)幫助作用
具體代碼如下：
1.服務(wù)器端代碼:
<?phpclass SocketServer{ private $_port='9000'; private $_address='127.0.0.1'; private $_client_socket_list=array(); public function __set($name,$val){ $this--->$name=$val; } private function _showError($error){ exit($error); } /** * 開(kāi)始進(jìn)行socket服務(wù)器端監(jiān)聽(tīng)端口 */ public function start(){ // 創(chuàng)建端口 if (($sock = socket_create ( AF_INET, SOCK_STREAM, SOL_TCP )) === false) { $this->_showError("socket_create() failed :reason:" . socket_strerror ( socket_last_error () )); } // 綁定 if (socket_bind ( $sock, $this->_address, $this->_port ) === false) { $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) )); } // 監(jiān)聽(tīng) if (socket_listen ( $sock, 5 ) === false) { $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ) ); } do { //當(dāng)有一個(gè)客戶(hù)端連接的時(shí)候 if ($client_socket=socket_accept ( $sock )) { $count = count ( $this->_client_socket_list ) + 1; //把新來(lái)的用戶(hù)加入 客戶(hù)端數(shù)組里 $this->_client_socket_list[]=$client_socket; echo "new connection:/r/n";//服務(wù)器端輸出當(dāng)前正在連接的客戶(hù)端數(shù)量 echo "current connection:{$count}/r/n"; //接受客戶(hù)端傳過(guò)來(lái)的字符串 $msg=$this->read($client_socket); echo "client:{$msg}/r/n"; //服務(wù)器向客戶(hù)端傳值 $my_msg="I am fine,think you/r/n"; $this->send($client_socket,$my_msg); } /** * 這段代碼給你參考,用來(lái)判斷是否有客戶(hù)端主動(dòng)失去連接 else{ foreach ( $this->_client_socket_list as $socket ) { $len = socket_recv ($socket, $buffer, 2048, 0 ); // 接受一下客戶(hù)端信息,如果為0代表斷開(kāi)連接 if ($len < 7) { //這里寫(xiě)是去連接的客戶(hù)端業(yè)務(wù) } } } */ }while(true); } /** * 發(fā)送數(shù)據(jù)給客戶(hù)端 */ public function send($client_socket,$str){ return socket_write ( $client_socket,$str, strlen ( $str ) ); } /** * 從客戶(hù)端接受數(shù)據(jù) */ public function read($client_socket){ return socket_read ( $client_socket, 8192 );//8192實(shí)際代表的接受長(zhǎng)度,我用819292表示長(zhǎng)一點(diǎn),這樣長(zhǎng)一點(diǎn)的字符串也可以接受到,不到8192也沒(méi)關(guān)系,會(huì)自動(dòng)識(shí)別 }}$socket_server =new SocketServer();$socket_server->start();//開(kāi)始監(jiān)聽(tīng)
2.客戶(hù)端代碼:
<?phpclass SocketServer{ private $_port='9000'; private $_address='127.0.0.1'; private $_client_socket_list=array(); public function __set($name,$val){ $this--->$name=$val; } private function _showError($error){ exit($error); } /** * 開(kāi)始進(jìn)行socket服務(wù)器端監(jiān)聽(tīng)端口 */ public function start(){ // 創(chuàng)建端口 if (($sock = socket_create ( AF_INET, SOCK_STREAM, SOL_TCP )) === false) { $this->_showError("socket_create() failed :reason:" . socket_strerror ( socket_last_error () )); } // 綁定 if (socket_bind ( $sock, $this->_address, $this->_port ) === false) { $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) )); } // 監(jiān)聽(tīng) if (socket_listen ( $sock, 5 ) === false) { $this->_showError("socket_bind() failed :reason:" . socket_strerror ( socket_last_error ( $sock ) ) ); } do { //當(dāng)有一個(gè)客戶(hù)端連接的時(shí)候 if ($client_socket=socket_accept ( $sock )) { $count = count ( $this->_client_socket_list ) + 1; //把新來(lái)的用戶(hù)加入 客戶(hù)端數(shù)組里 $this->_client_socket_list[]=$client_socket; echo "new connection:/r/n";//服務(wù)器端輸出當(dāng)前正在連接的客戶(hù)端數(shù)量 echo "current connection:{$count}/r/n"; //接受客戶(hù)端傳過(guò)來(lái)的字符串 $msg=$this->read($client_socket); echo "client:{$msg}/r/n"; //服務(wù)器向客戶(hù)端傳值 $my_msg="I am fine,think you/r/n"; $this->send($client_socket,$my_msg); } /** * 這段代碼給你參考,用來(lái)判斷是否有客戶(hù)端主動(dòng)失去連接 else{ foreach ( $this->_client_socket_list as $socket ) { $len = socket_recv ($socket, $buffer, 2048, 0 ); // 接受一下客戶(hù)端信息,如果為0代表斷開(kāi)連接 if ($len < 7) { //這里寫(xiě)是去連接的客戶(hù)端業(yè)務(wù) } } } */ }while(true); } /** * 發(fā)送數(shù)據(jù)給客戶(hù)端 */ public function send($client_socket,$str){ return socket_write ( $client_socket,$str, strlen ( $str ) ); } /** * 從客戶(hù)端接受數(shù)據(jù) */ public function read($client_socket){ return socket_read ( $client_socket, 8192 );//8192實(shí)際代表的接受長(zhǎng)度,我用819292表示長(zhǎng)一點(diǎn),這樣長(zhǎng)一點(diǎn)的字符串也可以接受到,不到8192也沒(méi)關(guān)系,會(huì)自動(dòng)識(shí)別 }}$socket_server =new SocketServer();$socket_server->start();//開(kāi)始監(jiān)聽(tīng)
注意事項(xiàng):服務(wù)器端請(qǐng)用CLI模式運(yùn)行,cgi模式會(huì)超時(shí),這是新手常喜歡犯的錯(cuò)誤。那么什么是CLI模式呢？簡(jiǎn)單的說(shuō)就是用命令行去執(zhí)行,而不要用游覽器打開(kāi),否則會(huì)超時(shí)的！
php技術(shù)：php socket客戶(hù)端及服務(wù)器端應(yīng)用實(shí)例，轉(zhuǎn)載需保留來(lái)源！
鄭重聲明：本文版權(quán)歸原作者所有，轉(zhuǎn)載文章僅為傳播更多信息之目的，如作者信息標(biāo)記有誤，請(qǐng)第一時(shí)間聯(lián)系我們修改或刪除，多謝。
