Fabien Potencier 5a5a640cbc minor #1609 get PHP version info once on construction (SpacePossum) ...

This PR was squashed before being merged into the 1.18-dev branch (closes #1609).

Discussion
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get PHP version info once on construction

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes

Hi,
I was profiling a project and noticed that `phpversion` was called 5000 times by Twig.
This patch reduces the amount of calls without breaking anything (I hope ;)  )

![twig_phpversion](https://cloud.githubusercontent.com/assets/10462973/5921451/53d3e66c-a644-11e4-94aa-a3daf762e34d.png)

Commits
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24ff698 get PHP version info once on construction

2015-01-29 10:43:27 +01:00

..

Twig/Tests

minor #1609 get PHP version info once on construction (SpacePossum)

2015-01-29 10:43:27 +01:00

bootstrap.php

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