1.2.278. Could Drop Variable

Suggest removing the variable in catch clause where the variable is not used. The type of the exception is sufficient to make the catch clause work. Although, it is recommended to use the caught exception, for chaining or logging, for example.

<?php

try {
     doSomething();
} catch(Exception1 $e) {
     // No usage of $e : just drop it from the clause
} catch(Exception2 $e2) {
     // $e2 is caught and used.
     echo $e2->getMessage();
}

?>

1.2.278.1. Suggestions

• Remove the unused variable

1.2.278.2. Specs

Short name	Exceptions/CouldDropVariable
Rulesets	All, Changed Behavior, Dead code, Suggestions
Exakat since	2.6.4
PHP Version	With PHP 8.0 and more recent
Severity	Minor
Time To Fix	Quick (30 mins)
Precision	Very high
Features	catch
Available in	Entreprise Edition, Exakat Cloud