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All 2.1.x versions support: 7.0.2, 7.0.6–7.0.x (all 2.1.x versions)
There is a known PHP 7.0.5 issue{:target="_blank"} that affects our code compiler; to avoid the issue, do not use PHP 7.0.5.
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2.1.0 and 2.1.1 support 5.6.x (versions 2.1.0 and 2.1.1)
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2.1.2 and later supports:
- PHP 5.6.5 and later
- 7.0.4 (in addition to the versions listed previously)
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Not supported by any 2.1.x version:
- PHP 7.1
- PHP 5.5