SymfonyWorld Online 2022 Winter Edition

ReflectionFunctionAbstract::getClosureUsedVariables

(PHP 8 >= 8.1.0)

ReflectionFunctionAbstract::getClosureUsedVariablesReturns an array of the used variables in the Closure

Description

public ReflectionFunctionAbstract::getClosureUsedVariables(): array

Returns an array of the used variables in the Closure.

Parameters

This function has no parameters.

Return Values

Returns an array of the used variables in the Closure.

Examples

Example #1 ReflectionFunctionAbstract::getClosureUsedVariables() example

<?php

$one 
1;
$two 2;

$function = function() use ($one$two) {
    static 
$three 3;
};

$reflector = new ReflectionFunction($function);

var_dump($reflector->getClosureUsedVariables());
?>

The above example will output something similar to:

array(2) {
  ["one"]=>
  int(1)
  ["two"]=>
  int(2)
}

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