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<?php |
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namespace Benrowe\Laravel\Config; |
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/** |
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* Facilitates the conversion of hierarchical data into a flat structure |
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* |
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* @package Benrowe\Laravel\Config |
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*/ |
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trait StorageConverterTrait |
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{ |
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/** |
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* Converts the flat key/value from the storage engine |
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* to a heirachy structure based on the key sytax |
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* |
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* @param array $data |
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* @return array |
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*/ |
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private function dataDecode($data) |
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{ |
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// preprocess the keys into a unique list where the array values are |
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// stored against the same key |
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$data = $this->unpackArray($data); |
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$newData = []; |
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foreach ($data as $key => $value) { |
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$this->arrHelper->set($newData, $key, $value); |
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} |
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return $newData; |
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} |
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/** |
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* unpack the keys that are structured for arrays so that they no |
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* longer have the [] syntax at the end. Rather they're now a proper |
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* array. |
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* |
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* @param array $data [description] |
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* @return array |
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*/ |
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private function unpackArray($data) |
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{ |
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$arrKeys = array_filter($data, function ($val) { |
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return preg_match(self::ARRAY_PATTERN, $val); |
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}); |
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foreach ($arrKeys as $key => $value) { |
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$newKey = preg_replace(self::ARRAY_PATTERN, '', $key); |
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if (!isset($data[$newKey])) { |
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$data[$newKey] = []; |
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} |
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$data[$newKey][] = $value; |
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unset($data[$key]); |
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} |
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return $data; |
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} |
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/** |
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* Flatten a multi-dimensional array into a linear key/value list |
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* |
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* @param array $data |
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* @param string|null $prefix |
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* @return array |
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*/ |
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private function dataEncode($data, $prefix = null) |
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{ |
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$newData = []; |
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foreach ($data as $key => $value) { |
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if (is_array($value)) { |
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$newData = array_merge( |
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$newData, |
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$this->encodeArray($key, $value, $prefix) |
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); |
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continue; |
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} |
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$newData[$prefix.$key] = $value; |
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} |
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return $newData; |
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} |
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/** |
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* Encode the array of values against the provided key |
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* |
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* @param string $key |
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* @param array $value either an associative or keyed array |
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* @param string|null $prefix |
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* @return array |
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*/ |
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private function encodeArray($key, array $value, $prefix = null) |
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{ |
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$data = []; |
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if (!$this->arrHelper->isAssoc($value)) { |
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foreach ($value as $index => $val) { |
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$data[$prefix.$key.'['.$index.']'] = $val; |
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} |
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return $data; |
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} |
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return $this->dataEncode($value, $prefix.$key.self::KEY_DELIMITER); |
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} |
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} |
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benrowe /
laravel-config
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: