Zemit\Utils\Transform::_flattenKeys()

Complexity

Conditions	18
Paths	579

Size

Total Lines	59
Code Lines	28

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	23
CRAP Score	19.0524

Importance

Changes	1
Bugs	0	Features	0

<?php
    final public static function _flattenKeys($array = null, ?string $delimiter = '.', ?bool $lowerKey = true, ?string $context = null) : ?array
    {
        // nothing passed
        if (!isset($array)) {
            return null;
        }
        
        $ret = [];
        
        if (!is_array($array) || is_object($array)) {
            $array = [$array];
        }
        
        foreach ($array as $key => $value) {
            
            // handle our special attribute
            if (is_bool($key)) {
                $value = $key;
                $key = null;
            }
            
            // flip value to key
            if (is_int($key)) {
                if (is_string($value)) {
                    $key = $value;
                    $value = true;
                }
                else {
                    $key = null;
                }
            }
            
            // force lower case key
            if (is_string($key)) {
                $key = trim($lowerKey ? mb_strtolower($key) : $key);
            }
            
            //
            if (is_string($value) && empty($value)) {
                $value = true;
            }
            
            // set the key
            $currentKey = (!empty($context) ? $context . (!empty($key) ? $delimiter : null) : null) . $key;
            
            if (is_array($value) || is_object($value)) {
                $subRet = self::_flattenKeys(is_callable($value)? $value() : $value, $delimiter, $lowerKey, $currentKey);
                $ret = array_merge_recursive($ret, $subRet);

It seems like $subRet can also be of type null; however, parameter $_ of array_merge_recursive() does only seem to accept array, maybe add an additional type check?

                
                if (!isset($ret[$currentKey])) {
                    $ret[$currentKey] = false;
                }
            }
            else {
                $ret[$currentKey] = $value;
            }
        }
        
        return $ret;
    }