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11 changes: 11 additions & 0 deletions components/expression_language/extending.rst
Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,17 @@ register.
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.. tip::

You can create an expression function from a PHP function with the
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"You can create ..." => "To create ..."

:method:`Symfony\\Component\\ExpressionLanguage\\ExpressionFunction::fromPhp` static method::

ExpressionFunction::fromPhp('strtoupper');

It allows namespaced PHP function where second parameter must be defined to name expression::
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[...] where the second [...]

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Done


ExpressionFunction::fromPhp('My\strtoupper', 'my_strtoupper');

You can register providers using
:method:`Symfony\\Component\\ExpressionLanguage\\ExpressionLanguage::registerProvider`
or by using the second argument of the constructor::
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