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<?php |
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namespace Graze\ArrayMerger; |
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use Graze\ArrayMerger\ValueMerger\LastValue; |
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/** |
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* Class RecursiveArrayMerger |
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* |
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* array_merge_recursive does indeed merge arrays, but it converts values with duplicate |
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* keys to arrays rather than overwriting the value in the first array with the duplicate |
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* value in the second array, as array_merge does. I.e., with array_merge_recursive, |
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* this happens (documented behavior): |
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* |
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* array_merge_recursive(array('key' => 'org value'), array('key' => 'new value')); |
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* => array('key' => array('org value', 'new value')); |
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*/ |
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class RecursiveArrayMerger implements ArrayMergerInterface |
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{ |
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use StaticMethodsTrait; |
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/** @var callable */ |
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protected $valueMerger; |
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/** @var int */ |
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private $flags; |
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/** |
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* @param callable $valueMerger |
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* @param int $flags one of ArrayMergerInterface::FLAG_* |
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*/ |
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public function __construct(callable $valueMerger = null, $flags = 0) |
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{ |
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$this->valueMerger = $valueMerger ?: new LastValue(); |
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$this->flags = $flags; |
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} |
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/** |
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* Merge using the supplied Value Merge |
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* |
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* @param callable $valueMerger |
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* @param array $array1 |
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* @param array $arrays |
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* |
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* @return array |
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*/ |
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public static function mergeUsing(callable $valueMerger, array $array1, array $arrays) |
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{ |
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$merger = new static($valueMerger); |
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return call_user_func_array([$merger, 'merge'], array_merge([$array1], array_slice(func_get_args(), 2))); |
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} |
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/** |
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* Merge the values from all the array supplied, the first array is treated as the base array to merge into |
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* |
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* @param array $array1 |
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* @param array|null $arrays |
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* |
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* @return array |
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*/ |
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public function merge(array $array1, array $arrays = null) |
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{ |
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$arrays = array_slice(func_get_args(), 1); |
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if (count($arrays) === 0) { |
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return $array1; |
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} |
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// if all arrays are sequential and flag is set, append them all |
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if ($this->flags & static::FLAG_APPEND_VALUE_ARRAY == static::FLAG_APPEND_VALUE_ARRAY |
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&& array_is_sequential($array1) |
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&& count(array_filter($arrays, 'Graze\ArrayMerger\array_is_sequential')) === count($arrays)) { |
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return call_user_func_array('array_merge', array_merge([$array1], $arrays)); |
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} |
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$merged = $array1; |
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foreach ($arrays as $toMerge) { |
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foreach ($toMerge as $key => &$value) { |
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if (is_array($value) && array_key_exists($key, $merged) && is_array($merged[$key])) { |
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if ($this->flags & static::FLAG_APPEND_VALUE_ARRAY == static::FLAG_APPEND_VALUE_ARRAY |
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&& array_is_sequential($value) |
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&& array_is_sequential($merged[$key])) { |
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$merged[$key] = array_merge($merged[$key], $value); |
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} else { |
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$merged[$key] = $this->merge($merged[$key], $value); |
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} |
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} elseif (array_key_exists($key, $merged)) { |
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$merged[$key] = call_user_func($this->valueMerger, $merged[$key], $value); |
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} else { |
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$merged[$key] = $value; |
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} |
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} |
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} |
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return $merged; |
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} |
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} |
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graze /
array-merger
