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15 Keys (v3.53.0) edition

Rule no_unset_cast

Variables must be set null instead of using (unset) casting.

Examples

Example #1

--- Original
+++ New
 <?php
-$a = (unset) $b;
+$a =  null;

Rule sets

The rule is part of the following rule sets:

References

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