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vendor/umpirsky/twig-php-function/README.md

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+<h3 align="center">
+    <a href="https://github.com/umpirsky">
+        <img src="https://farm2.staticflickr.com/1709/25098526884_ae4d50465f_o_d.png" />
+    </a>
+</h3>
+<p align="center">
+  <a href="https://github.com/umpirsky/Symfony-Upgrade-Fixer">symfony upgrade fixer</a> &bull;
+  <a href="https://github.com/umpirsky/Twig-Gettext-Extractor">twig gettext extractor</a> &bull;
+  <a href="https://github.com/umpirsky/wisdom">wisdom</a> &bull;
+  <a href="https://github.com/umpirsky/centipede">centipede</a> &bull;
+  <a href="https://github.com/umpirsky/PermissionsHandler">permissions handler</a> &bull;
+  <a href="https://github.com/umpirsky/Extraload">extraload</a> &bull;
+  <a href="https://github.com/umpirsky/Gravatar">gravatar</a> &bull;
+  <a href="https://github.com/umpirsky/locurro">locurro</a> &bull;
+  <a href="https://github.com/umpirsky/country-list">country list</a> &bull;
+  <a href="https://github.com/umpirsky/Transliterator">transliterator</a>
+</p>
+
+# Twig PHP Function [![Build Status](https://travis-ci.org/umpirsky/twig-php-function.svg?branch=master)](https://travis-ci.org/umpirsky/twig-php-function)
+
+Call (almost) any PHP function from your Twig templates.
+
+## Usage
+
+After [registering](http://twig.sensiolabs.org/doc/advanced.html#creating-an-extension) `PhpFunctionExtension` call PHP functions from your templates like this:
+
+```twig
+Hi, I am unique: {{ uniqid() }}.
+
+And {{ floor(7.7) }} is floor of 7.7.
+```
+
+## Extend
+
+You can control allowed PHP functions by adding new ones like this:
+
+```php
+$extension = new Umpirsky\Twig\Extension\PhpFunctionExtension();
+$extension->allowFunction('hash_hmac');
+```
+
+or restrict what functions are allowed like this:
+
+```php
+$extension = new Umpirsky\Twig\Extension\PhpFunctionExtension(['floor', 'ceil']);
+
+```
+
+If you think that some function should be allowed/not allowed, feel free to [raise issue](https://github.com/umpirsky/twig-php-function/issues/new) or submit a pull request.