The expression self::lookupTable of type string[] is implicitly converted to a boolean; are you sure this is intended? If so, consider using empty($expr) instead to make it clear that you intend to check for an array without elements.
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an
empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using empty(..) or !empty(...) instead.
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$values = self::getValidValues();
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self::$lookupTable = [];
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foreach ($values as $value) {
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self::$lookupTable[strtoupper($value)] = $value;
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}
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foreach ($values as $key => $value) {
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self::$lookupTable[strtoupper($key)] = $value;
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}
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}
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return self::$lookupTable;
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}
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final public static function getValidValues(): array
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{
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$reflectionClass = new ReflectionClass(__CLASS__);
apie-lib /
value-objects
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.