Define a constant instead of duplicating this literal "errorHandler" 3 times. Open
$errorHandlerCfg = isset($event['errorHandler'])- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.
Define a constant instead of duplicating this literal "debug" 10 times. Open
if (!$event['debug'] || $event['isTarget'] === false) {- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.
Remove the unused function parameter "$name". Open
private function onCfgKey($val, $name, Event $event) // @phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter- Read upRead up
- Exclude checks
Unused parameters are misleading. Whatever the value passed to such parameters is, the behavior will be the same.
Noncompliant Code Example
function doSomething($a, $b) { // "$a" is unused
return compute($b);
}
Compliant Solution
function doSomething($b) {
return compute($b);
}
Exceptions
Functions in classes that override a class or implement interfaces are ignored.
class C extends B {
function doSomething($a, $b) { // no issue reported on $b
compute($a);
}
}
See
- MISRA C++:2008, 0-1-11 - There shall be no unused parameters (named or unnamed) in nonvirtual functions.
- MISRA C:2012, 2.7 - There should be no unused parameters in functions
- CERT, MSC12-C. - Detect and remove code that has no effect or is never executed
- CERT, MSC12-CPP. - Detect and remove code that has no effect
Define a constant instead of duplicating this literal "channels" 4 times. Open
'channels' => [$this, 'onCfgChannels'],- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.
Define a constant instead of duplicating this literal "onCfgEmail" 3 times. Open
'emailFrom' => [$this, 'onCfgEmail'],- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.
Define a constant instead of duplicating this literal "onCfgReplaceSubscriber" 3 times. Open
'onLog' => [$this, 'onCfgReplaceSubscriber'],- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.
Define a constant instead of duplicating this literal "emailer" 3 times. Open
$errorEmailerCfg = isset($errorHandlerCfg['emailer'])- Read upRead up
- Exclude checks
Duplicated string literals make the process of refactoring error-prone, since you must be sure to update all occurrences.
On the other hand, constants can be referenced from many places, but only need to be updated in a single place.
Noncompliant Code Example
With the default threshold of 3:
function run() {
prepare('action1'); // Non-Compliant - 'action1' is duplicated 3 times
execute('action1');
release('action1');
}
Compliant Solution
ACTION_1 = 'action1';
function run() {
prepare(ACTION_1);
execute(ACTION_1);
release(ACTION_1);
}
Exceptions
To prevent generating some false-positives, literals having less than 5 characters are excluded.