Function compare
has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring. Open
public static function compare($array1, $array2, $strict = true)
{
if (!is_array($array1)) {
throw new \InvalidArgumentException('$array1 must be an array!');
}
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Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Method compare
has 30 lines of code (exceeds 25 allowed). Consider refactoring. Open
public static function compare($array1, $array2, $strict = true)
{
if (!is_array($array1)) {
throw new \InvalidArgumentException('$array1 must be an array!');
}
The method compare() has an NPath complexity of 772. The configured NPath complexity threshold is 200. Open
public static function compare($array1, $array2, $strict = true)
{
if (!is_array($array1)) {
throw new \InvalidArgumentException('$array1 must be an array!');
}
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NPathComplexity
Since: 0.1
The NPath complexity of a method is the number of acyclic execution paths through that method. A threshold of 200 is generally considered the point where measures should be taken to reduce complexity.
Example
class Foo {
function bar() {
// lots of complicated code
}
}
Source https://phpmd.org/rules/codesize.html#npathcomplexity
The method compare() has a Cyclomatic Complexity of 14. The configured cyclomatic complexity threshold is 10. Open
public static function compare($array1, $array2, $strict = true)
{
if (!is_array($array1)) {
throw new \InvalidArgumentException('$array1 must be an array!');
}
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- Exclude checks
CyclomaticComplexity
Since: 0.1
Complexity is determined by the number of decision points in a method plus one for the method entry. The decision points are 'if', 'while', 'for', and 'case labels'. Generally, 1-4 is low complexity, 5-7 indicates moderate complexity, 8-10 is high complexity, and 11+ is very high complexity.
Example
// Cyclomatic Complexity = 11
class Foo {
1 public function example() {
2 if ($a == $b) {
3 if ($a1 == $b1) {
fiddle();
4 } elseif ($a2 == $b2) {
fiddle();
} else {
fiddle();
}
5 } elseif ($c == $d) {
6 while ($c == $d) {
fiddle();
}
7 } elseif ($e == $f) {
8 for ($n = 0; $n < $h; $n++) {
fiddle();
}
} else {
switch ($z) {
9 case 1:
fiddle();
break;
10 case 2:
fiddle();
break;
11 case 3:
fiddle();
break;
default:
fiddle();
break;
}
}
}
}
Source https://phpmd.org/rules/codesize.html#cyclomaticcomplexity
Missing class import via use statement (line '20', column '23'). Open
throw new \InvalidArgumentException('$array1 must be an array!');
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MissingImport
Since: 2.7.0
Importing all external classes in a file through use statements makes them clearly visible.
Example
function make() {
return new \stdClass();
}
Source http://phpmd.org/rules/cleancode.html#MissingImport
The method compare has a boolean flag argument $strict, which is a certain sign of a Single Responsibility Principle violation. Open
public static function compare($array1, $array2, $strict = true)
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BooleanArgumentFlag
Since: 1.4.0
A boolean flag argument is a reliable indicator for a violation of the Single Responsibility Principle (SRP). You can fix this problem by extracting the logic in the boolean flag into its own class or method.
Example
class Foo {
public function bar($flag = true) {
}
}