※ 引述《kenshieh ( )》之銘言：
: 請問在 PHP 中是否有可能實現 connection pool ？
: 試了各式各樣的方法，幾乎都無法把 Resource #id 存起來，不知是否有其它解決方法
: 呢？ 謝謝。 :>
pooling 應該是 apache 所做的事情吧
曾經看過一篇 Rasmus Lerdorf（php 之父）的 interview 對於 pooling
這個問題有以下的回應（SP為記者；RL則是 Rasmus Lerdorf)：
[原文： http://www.sitepoint.com/article/phps-creator-rasmus-lerdorf/4 ]
x x x
SP: What about database connection pooling? Persistent connections are not
nearly good enough - are there plans to implement connection pooling in the
future?
RL: A pool of connections has to be owned by a single process. Since most
people use the Apache Web server, which is a multi-process pre-forking
server, there is simply no way that PHP can do this connection pooling. It
has to be done by a dedicated standalone process and is quite outside the
scope of PHP itself. Both SQLRelay and SRM can be used to solve this problem.
If/when the common architecture for PHP is a single-process multithreaded Web
server, we might consider putting this functionality into PHP itself, but
until that day it really doesn't make much sense. Even Apache 2 is still
going to be a multi-process server with each process being able to carry
multiple threads. So we could potentially have a pool of connections in each
process.
x x x
如果要達到類似 connection pooling 的效果，應該是使用 persistent connections；
至少它在連結之前，會先查看是否與資料庫間已建有連結，若已建立便使用該連結，
若無才會建立新的。
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※ 編輯: foxzgerald 來自: 140.119.199.121 (05/27 14:10)