apache - php是多线程的吗?
我在php5.2上面运行一个自动发邮件的程序，一开始运行后，再点别的链接都开始在等待状态了。是否是因为php是单线程排队运行?
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我在php5.2上面运行一个自动发邮件的程序，一开始运行后，再点别的链接都开始在等待状态了。是否是因为php是单线程排队运行?
拿PHP-FPM来说，不管是线程安全（TS）还是非线程安全（NTS）版本，一个工作进程在同一时刻只能处理一个请求，要同时处理多个请求，则必须开启多个工作进程，比如在php-fpm.conf中配置开启5个pm.max_children = 5。
工作在线程化MPM（比如Linux上的event，Windows上的winnt）下的Apache需要配合线程安全（TS）版PHP使用，这时，只要开启一个包含多个线程的Apache进程就能同时处理多个PHP请求。
Linux event MPM
StartServers 3
MinSpareThreads 75
MaxSpareThreads 250
ThreadsPerChild 25
MaxRequestWorkers 400
MaxConnectionsPerChild 0
Windows winnt MPM
ThreadsPerChild 150
MaxConnectionsPerChild 0
PHP-FPM和Apache/PHP能不能同时处理多个请求，跟pthreads这个PECL扩展没有关系。
只能说php-fpm或者php-cgi不是多线程的
php本身是可以写多线程的
http://php.net/manual/zh/class.thread.php
用swoole吧，并发so easy
php不是多线程的啊
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