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<?php |
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namespace SilverStripe\Config\MergeStrategy; |
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use SilverStripe\Config\Collections\MutableConfigCollectionInterface; |
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class Priority |
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{ |
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/** |
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* Merges an array of values into a collection |
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* |
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* @param array $mine Map of key to array with value and metadata sub-keys |
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* @param MutableConfigCollectionInterface $theirs |
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* @return MutableConfigCollectionInterface |
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*/ |
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public static function merge(array $mine, MutableConfigCollectionInterface $theirs) |
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{ |
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foreach ($mine as $class => $item) { |
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// Ensure we have value/metadata keys |
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$item = static::normaliseItem($item); |
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$value = $item['value']; |
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$metadata = $item['metadata']; |
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// If the item doesn't exist in theirs, we can just set it and continue. |
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$theirValue = $theirs->get($class, null, true); |
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if (!isset($theirValue)) { |
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$theirs->set($class, null, $value, $metadata); |
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continue; |
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} |
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// If its an array and the key already esists, we can use array_merge |
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if (is_array($value) && is_array($theirValue)) { |
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$value = static::mergeArray($value, $theirValue); |
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} |
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// Preserve metadata |
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if (!$metadata) { |
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$theirMetadata = $theirs->getMetadata(); |
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if (isset($theirMetadata[$class])) { |
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$metadata = $theirMetadata[$class]; |
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} |
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} |
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$theirs->set($class, null, $value, $metadata); |
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} |
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return $theirs; |
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} |
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/** |
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* Deep merges a high priorty array into a lower priority array, overwriting duplicate |
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* keys. If the keys are integers, then the merges acts like array_merge() and adds a new |
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* item. |
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* |
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* @param array $highPriority |
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* @param array $lowPriority |
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* |
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* @return array |
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*/ |
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public static function mergeArray(array $highPriority, array $lowPriority) |
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{ |
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foreach ($highPriority as $key => $value) { |
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// If value isn't an array, we can overwrite whatever was before it |
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if (!is_array($value)) { |
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if (is_int($key)) { |
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$lowPriority[] = $value; |
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} else { |
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$lowPriority[$key] = $value; |
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} |
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continue; |
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} |
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// If not set, or we're changing type we can set low priority |
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if (is_int($key) || !array_key_exists($key, $lowPriority) || !is_array($lowPriority[$key])) { |
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if (is_int($key)) { |
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$lowPriority[] = $value; |
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} else { |
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$lowPriority[$key] = $value; |
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} |
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continue; |
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} |
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// We have two arrays, so we merge |
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$lowPriority[$key] = static::mergeArray($value, $lowPriority[$key]); |
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} |
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return $lowPriority; |
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} |
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/** |
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* Returns a normalised array with value/metadata keys |
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* |
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* @param array |
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* |
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* @return array |
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*/ |
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protected static function normaliseItem(array $item) |
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{ |
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if (!isset($item['value'])) { |
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$item['value'] = ''; |
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} |
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if (!isset($item['metadata'])) { |
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$item['metadata'] = []; |
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} |
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return ['value' => $item['value'], 'metadata' => $item['metadata']]; |
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} |
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} |
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: