㈠ php的openssl_sign（$data,$sign,$private_key）这个函数的源码是什么
这个是打开https的访问所用的到的函数
㈡ PHP+Laravel框架RabbitMQ简单使用（PTP）
一、简介Point-to-Point，点对点通信模型。PTP是基于队列(Queue)的，一个队列可以有多个生产者，和多个消费者。消息服务器按照收到消息的先后顺序，将消息放到队列中。队列中的每一条消息，只能由一个消费者进行消费，消费之后就会从队列中移除。
特点：
每个消息只用一个消费者；
发送者和接受者没有时间依赖；
接受者确认消息接受和处理成功。
P 表示为生产者 、C 表示为消费者，红色表示队列。
在RabbitMQ中有生产者，消费者的概念，本篇主要是消息如何生产以及消费者这部分的实现。使用的laravel框架，php-amqplib拓展。
二、Laravel中添加依赖在项目根目录下执行一下命令
composer require php-amqplib/php-amqplib
lishuo@李硕的MacBook?Pro:~/Code/php/www.zfw.com?(branch:?master!)$?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来实现消息的生产和消费1.创建生产者执行以下命令快速创建生产者
php artisan make:command RabbitmqProcerCommand
lishuo@李硕的MacBook?Pro:~/Code/php/www.zfw.com?(branch:?master!)$?php?artisan?make:command?RabbitmqProcerCommandConsole?command?created?successfully.基本代码（接下来就在command里面写生产消息的逻辑）<?phpnamespace?AppConsoleCommands;use?IlluminateConsoleCommand;//引入amqp扩展use?;use?PhpAmqpLibMessageAMQPMessage;class?RabbitmqProcerCommand?extends?Command{????/**?????*?The?name?and?signature?of?the?console?command.?????*?????*?@var?string?????*/????protected?$signature?=?'rabbitmq_procer'//给生产者起个command名称????/**?????*?The?console?command?description.?????*?????*?@var?string?????*/????protected?$description?=?'Command?description'????/**?????*?Create?a?new?command?instance.?????*?????*?@return?void?????*/????public?function?__construct()????{????????parent::__construct();????}????/**?????*?Execute?the?console?command.?????*??生产者消息代码?????*?@return?int?????*/????public?function?handle()????{????????//创建服务器连接????????$connection?=?new?AMQPStreamConnection('localhost',?5672,?'guest',?'guest');????????//连接信道????????//信道是生产消费者与rabbit通信的渠道，生产者publish或者消费者消费一个队列都是需要通过信道来通信的????????//信道是建立在TCP上面的虚拟链接，也就是rabbitMQ在一个TCP上面建立成百上千的信道来达到多个线程处理。????????//注意是一个TCP?被多个线程共享，每个线程对应一个信道，信道在rabbit都有唯一的ID，保证了信道的私有性，对应上唯一的线程使用。????????$channel?=?$connection->channel();????????//channel->queue_declare通过信道创建一个是否是持久化的消息队列????????//queue第一个参数代表消息队列名称????????$channel->queue_declare('test',?false,?false,?false,?false);????????//往队列里要发送内容，待发送的内容????????$msg?=?new?AMQPMessage('我是一个生产者消息');????????//通过信道来进行发送消息????????//而exchange是怎么知道消息应该推到哪个queue呢，这就要通过绑定queue与exchange时的routingkey了，通过代码进行绑定并且指定routingkey，下面有一张关系图,p(发布者)?—>?x(exchange)?bindding(绑定关系也就是我们的routingkey)?红色代表着queue????????$channel->basic_publish($msg,?'',?'test');????????echo?"?[x]?Sent?'我是一个生产者消息!' ";????????//关闭信道????????$channel->close();????????//关闭连接????????$connection->close();????}}2.创建消费者因为消费者是需要常驻内存的，所以需要在cli下运行，我们可以通过以下操作创建一个任务。
?php?artisan?make:command?RabbitmqConsumerCommand基本代码（接下来就在command里面写消费消息的逻辑）<?phpnamespace?AppConsoleCommands;use?IlluminateConsoleCommand;use?;class?RabbitmqConsumerCommand?extends?Command{????/**?????*?The?name?and?signature?of?the?console?command.?????*?????*?@var?string?????*/????protected?$signature?=?'rabbitmq_consumer'//给消费者起个command名称????/**?????*?The?console?command?description.?????*?????*?@var?string?????*/????protected?$description?=?'Command?description'????/**?????*?Create?a?new?command?instance.?????*?????*?@return?void?????*/????public?function?__construct()????{????????parent::__construct();????}????/**?????*?Execute?the?console?command.?????*?????*?@return?int?????*/????public?function?handle()????{????????//创建服务器连接????????$connection?=?new?AMQPStreamConnection('localhost',?5672,?'guest',?'guest');????????//连接信道????????//信道是生产消费者与rabbit通信的渠道，生产者publish或者消费者消费一个队列都是需要通过信道来通信的????????//信道是建立在TCP上面的虚拟链接，也就是rabbitMQ在一个TCP上面建立成百上千的信道来达到多个线程处理。????????//注意是一个TCP?被多个线程共享，每个线程对应一个信道，信道在rabbit都有唯一的ID，保证了信道的私有性，对应上唯一的线程使用。????????$channel?=?$connection->channel();????????//channel->queue_declare通过信道创建一个是否是持久化的消息队列????????//queue第一个参数代表消息队列名称????????$channel->queue_declare('test',?false,?false,?false,?false);????????echo?"?[*]?Waiting?for?messages.?To?exit?press?CTRL+C ";????????//进行监听消费者是否有消息，如果有进行输出消息内容????????$callback?=?function?($msg)?{????????????echo?'?[x]?Received?',?$msg->body,?" ";????????};????????//通过信道进行消费消息????????$channel->basic_consume('test',?'',?false,?true,?false,?false,?$callback);????????//如果信道是打开状态????????while?($channel->is_open())?{????????????//然后让信道一直处于监听等待状态????????????$channel->wait();????????}????????//关闭信道????????$channel->close();????????//关闭连接????????$connection->close();????}}三、使用command进行测试生产消息和消费消息是否成功执行生产消息 php artisan rabbitmq_procer 执行消费消息 hp artisan rabbitmq_consumer
㈢ php示例怎么转java
/**
* 生成签名
* @param string timestamp 时间戳
* @param string appSecret 合作商开发者密钥
* @param string nonce 随机字符串
* @return string
*/
public String makeSignature (String timestamp,String appSecret,String nonce) {
String[] tmpArr = {timestamp, nonce, appSecret};
// 按值升序排序
Arrays.sort(tmpArr)
// 数组拼接为字符串
// 调用md5方法
return signature;
}
其他的都是方法调用, 根据需要编写就行
㈣ php中开启SESSION的问题！
这个错误好像是session开启之前有输出值 你使用headers_sent()函数测试一下是否有输出值，这个函数的参数是file和line，在你报错的文件代码前写上
if(headers_sent($file,$line)) {
die("can not execute in " . $file . " in " . $line);
}试试 ，我也是遇到过这种情况的 和你分享一下