How to detect if PHP was built with thread safety (ZTS)?

From: Date: Mon, 04 Apr 2016 00:27:52 +0000
Subject: How to detect if PHP was built with thread safety (ZTS)?
Groups: php.general 
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Is there any way a PHP script can tell if the PHP it is running under was built with thread safety (ZTS)? I have some test code that would like to know. I don't see any constant, function, etc. that can be used to directly check if ZTS is enabled. The only way I've found is ob_start, phpinfo(INFO_GENERAL), then check the buffer for "Thread Safety" followed by Enabled or Disabled. Kind of ugly, and fragile. Is there a better way?

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