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[ExpressionLanguage] Update Expression_language: lint function #20353

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Dec 6, 2024
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[ExpressionLanguage] Update Expression_language: lint function #20353

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8 changes: 6 additions & 2 deletions components/expression_language.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,10 @@ if the expression is not valid::

$expressionLanguage->lint('1 + 2', []); // doesn't throw anything

$expressionLanguage->lint('1 + a', []);
// Throw SyntaxError Exception
// "Variable "a" is not valid around position 5 for expression `1 + a`."

The behavior of these methods can be configured with some flags defined in the
:class:`Symfony\\Component\\ExpressionLanguage\\Parser` class:

Expand All @@ -121,8 +125,8 @@ This is how you can use these flags::

$expressionLanguage = new ExpressionLanguage();

// this returns true because the unknown variables and functions are ignored
var_dump($expressionLanguage->lint('unknown_var + unknown_function()', Parser::IGNORE_UNKNOWN_VARIABLES | Parser::IGNORE_UNKNOWN_FUNCTIONS));
// Does not throw a SyntaxError because the unknown variables and functions are ignored
$expressionLanguage->lint('unknown_var + unknown_function()', [], Parser::IGNORE_UNKNOWN_VARIABLES | Parser::IGNORE_UNKNOWN_FUNCTIONS);

.. versionadded:: 7.1

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