[学習][PHP] Thread Safe と Non-Thread Safe の違いは？

IISの場合：

ISAPIであれば Thread Safe
FastCGIであれば Non-Thread Safe

を使えばいいみたい。

参考：
https://windows.php.net/index.php

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IIS
If you are using PHP as FastCGI with IIS you should use the Non-Thread Safe (NTS) versions of PHP.

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[PHP]