㈠ php的openssl_sign（$data,$sign,$private_key）這個函數的源碼是什麼
這個是打開https的訪問所用的到的函數
㈡ PHP+Laravel框架RabbitMQ簡單使用（PTP）
一、簡介Point-to-Point，點對點通信模型。PTP是基於隊列(Queue)的，一個隊列可以有多個生產者，和多個消費者。消息伺服器按照收到消息的先後順序，將消息放到隊列中。隊列中的每一條消息，只能由一個消費者進行消費，消費之後就會從隊列中移除。
特點：
每個消息只用一個消費者；
發送者和接受者沒有時間依賴；
接受者確認消息接受和處理成功。
P 表示為生產者 、C 表示為消費者，紅色表示隊列。
在RabbitMQ中有生產者，消費者的概念，本篇主要是消息如何生產以及消費者這部分的實現。使用的laravel框架，php-amqplib拓展。
二、Laravel中添加依賴在項目根目錄下執行一下命令
composer require php-amqplib/php-amqplib
lishuo@李碩的MacBook?Pro:~/Code/php/www.zfw.com?(branch:?master!)$?composer?require?php-amqplib/php-amqplibUsing?version?^3.1?for?php-amqplib/php-amqplib./composer.json?has?been?updatedRunning?composer?update?php-amqplib/php-amqplibLoading?composer?repositories?with?package?informationUpdating?dependenciesNothing?to?modify?in?lock?fileInstalling?dependencies?from?lock?file?(including?require-dev)Nothing?to?install,?update?or?removePackage?caouecs/laravel-lang?is?abandoned,?you?should?avoid?using?it.?Use?https://github.com/Laravel-Lang/lang?instead.Package?swiftmailer/swiftmailer?is?abandoned,?you?should?avoid?using?it.?Use?symfony/mailer?instead.Generating?optimized?autoload?files>?::postAutoloadDump>?@php?artisan?package:discover?--ansiDiscovered?Package:?barryvdh/laravel-ide-helperDiscovered?Package:?facade/ignitionDiscovered?Package:?fruitcake/laravel-corsDiscovered?Package:?jenssegers/mongodbDiscovered?Package:?laravel/passportDiscovered?Package:?laravel/sailDiscovered?Package:?laravel/sanctumDiscovered?Package:?laravel/tinkerDiscovered?Package:?maatwebsite/excelDiscovered?Package:?nesbot/carbonDiscovered?Package:?nunomaro/collisionPackage?manifest?generated?successfully.100?packages?you?are?using?are?looking?for?funding.Use?the?`composer?fund`?command?to?find?out?more!>?@php?artisan?vendor:publish?--tag=laravel-assets?--ansiNo?publishable?resources?for?tag?[laravel-assets].Publishing?complete.三、使用Laravel的command來實現消息的生產和消費1.創建生產者執行以下命令快速創建生產者
php artisan make:command RabbitmqProcerCommand
lishuo@李碩的MacBook?Pro:~/Code/php/www.zfw.com?(branch:?master!)$?php?artisan?make:command?RabbitmqProcerCommandConsole?command?created?successfully.基本代碼（接下來就在command裡面寫生產消息的邏輯）<?phpnamespace?AppConsoleCommands;use?IlluminateConsoleCommand;//引入amqp擴展use?;use?PhpAmqpLibMessageAMQPMessage;class?RabbitmqProcerCommand?extends?Command{????/**?????*?The?name?and?signature?of?the?console?command.?????*?????*?@var?string?????*/????protected?$signature?=?'rabbitmq_procer'//給生產者起個command名稱????/**?????*?The?console?command?description.?????*?????*?@var?string?????*/????protected?$description?=?'Command?description'????/**?????*?Create?a?new?command?instance.?????*?????*?@return?void?????*/????public?function?__construct()????{????????parent::__construct();????}????/**?????*?Execute?the?console?command.?????*??生產者消息代碼?????*?@return?int?????*/????public?function?handle()????{????????//創建伺服器連接????????$connection?=?new?AMQPStreamConnection('localhost',?5672,?'guest',?'guest');????????//連接信道????????//信道是生產消費者與rabbit通信的渠道，生產者publish或者消費者消費一個隊列都是需要通過信道來通信的????????//信道是建立在TCP上面的虛擬鏈接，也就是rabbitMQ在一個TCP上面建立成百上千的信道來達到多個線程處理。????????//注意是一個TCP?被多個線程共享，每個線程對應一個信道，信道在rabbit都有唯一的ID，保證了信道的私有性，對應上唯一的線程使用。????????$channel?=?$connection->channel();????????//channel->queue_declare通過信道創建一個是否是持久化的消息隊列????????//queue第一個參數代表消息隊列名稱????????$channel->queue_declare('test',?false,?false,?false,?false);????????//往隊列里要發送內容，待發送的內容????????$msg?=?new?AMQPMessage('我是一個生產者消息');????????//通過信道來進行發送消息????????//而exchange是怎麼知道消息應該推到哪個queue呢，這就要通過綁定queue與exchange時的routingkey了，通過代碼進行綁定並且指定routingkey，下面有一張關系圖,p(發布者)?—>?x(exchange)?bindding(綁定關系也就是我們的routingkey)?紅色代表著queue????????$channel->basic_publish($msg,?'',?'test');????????echo?"?[x]?Sent?'我是一個生產者消息!' ";????????//關閉信道????????$channel->close();????????//關閉連接????????$connection->close();????}}2.創建消費者因為消費者是需要常駐內存的，所以需要在cli下運行，我們可以通過以下操作創建一個任務。
?php?artisan?make:command?RabbitmqConsumerCommand基本代碼（接下來就在command裡面寫消費消息的邏輯）<?phpnamespace?AppConsoleCommands;use?IlluminateConsoleCommand;use?;class?RabbitmqConsumerCommand?extends?Command{????/**?????*?The?name?and?signature?of?the?console?command.?????*?????*?@var?string?????*/????protected?$signature?=?'rabbitmq_consumer'//給消費者起個command名稱????/**?????*?The?console?command?description.?????*?????*?@var?string?????*/????protected?$description?=?'Command?description'????/**?????*?Create?a?new?command?instance.?????*?????*?@return?void?????*/????public?function?__construct()????{????????parent::__construct();????}????/**?????*?Execute?the?console?command.?????*?????*?@return?int?????*/????public?function?handle()????{????????//創建伺服器連接????????$connection?=?new?AMQPStreamConnection('localhost',?5672,?'guest',?'guest');????????//連接信道????????//信道是生產消費者與rabbit通信的渠道，生產者publish或者消費者消費一個隊列都是需要通過信道來通信的????????//信道是建立在TCP上面的虛擬鏈接，也就是rabbitMQ在一個TCP上面建立成百上千的信道來達到多個線程處理。????????//注意是一個TCP?被多個線程共享，每個線程對應一個信道，信道在rabbit都有唯一的ID，保證了信道的私有性，對應上唯一的線程使用。????????$channel?=?$connection->channel();????????//channel->queue_declare通過信道創建一個是否是持久化的消息隊列????????//queue第一個參數代表消息隊列名稱????????$channel->queue_declare('test',?false,?false,?false,?false);????????echo?"?[*]?Waiting?for?messages.?To?exit?press?CTRL+C ";????????//進行監聽消費者是否有消息，如果有進行輸出消息內容????????$callback?=?function?($msg)?{????????????echo?'?[x]?Received?',?$msg->body,?" ";????????};????????//通過信道進行消費消息????????$channel->basic_consume('test',?'',?false,?true,?false,?false,?$callback);????????//如果信道是打開狀態????????while?($channel->is_open())?{????????????//然後讓信道一直處於監聽等待狀態????????????$channel->wait();????????}????????//關閉信道????????$channel->close();????????//關閉連接????????$connection->close();????}}三、使用command進行測試生產消息和消費消息是否成功執行生產消息 php artisan rabbitmq_procer 執行消費消息 hp artisan rabbitmq_consumer
㈢ php示例怎麼轉java
/**
* 生成簽名
* @param string timestamp 時間戳
* @param string appSecret 合作商開發者密鑰
* @param string nonce 隨機字元串
* @return string
*/
public String makeSignature (String timestamp,String appSecret,String nonce) {
String[] tmpArr = {timestamp, nonce, appSecret};
// 按值升序排序
Arrays.sort(tmpArr)
// 數組拼接為字元串
// 調用md5方法
return signature;
}
其他的都是方法調用, 根據需要編寫就行
㈣ php中開啟SESSION的問題！
這個錯誤好像是session開啟之前有輸出值 你使用headers_sent()函數測試一下是否有輸出值，這個函數的參數是file和line，在你報錯的文件代碼前寫上
if(headers_sent($file,$line)) {
die("can not execute in " . $file . " in " . $line);
}試試 ，我也是遇到過這種情況的 和你分享一下