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Rule explicit_indirect_variable

Add curly braces to indirect variables to make them clear to understand.

Examples

Example #1

--- Original
+++ New
 <?php
-echo $$foo;
-echo $$foo['bar'];
-echo $foo->$bar['baz'];
-echo $foo->$callback($baz);
+echo ${$foo};
+echo ${$foo}['bar'];
+echo $foo->{$bar}['baz'];
+echo $foo->{$callback}($baz);

Rule sets

The rule is part of the following rule set:

• @PhpCsFixer

References

• Fixer class: PhpCsFixer\Fixer\LanguageConstruct\ExplicitIndirectVariableFixer

• Test class: PhpCsFixer\Tests\Fixer\LanguageConstruct\ExplicitIndirectVariableFixerTest

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.