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<?php |
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namespace drupol\htmltag; |
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/** |
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* Class AbstractBaseHtmlTagObject. |
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* |
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* This class is the base class of other HTMLTag objects. |
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* It contains simple methods that are needed everywhere. |
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* We could have used a Trait instead, but I don't like working with traits. |
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*/ |
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abstract class AbstractBaseHtmlTagObject |
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{ |
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/** |
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* Transform a multidimensional array into a flat array. |
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* |
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* This method will flatten an array containing arrays. |
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* Keys will be lost during the flattening. |
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* We could use a iterator_to_array() with a custom RecursiveArrayIterator. |
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* But it seems to be even slower. |
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* |
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* @see http://php.net/manual/en/class.recursivearrayiterator.php#106519 |
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* |
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* @param mixed[] $data |
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* The input array |
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* |
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* @return mixed[] |
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* A simple array |
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*/ |
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protected function ensureFlatArray(array $data) |
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{ |
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$flat = []; |
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while (!empty($data)) { |
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$value = \array_shift($data); |
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if (\is_array($value)) { |
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$data = \array_merge($value, $data); |
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continue; |
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} |
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$flat[] = $value; |
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} |
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return $flat; |
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} |
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/** |
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* Convert a value into a string when it's possible. |
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* |
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* Ensure that the value gets converted into a string when it is possible. |
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* When it's not possible, the "null" value is returned instead. |
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* |
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* @param mixed $data |
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* The input value |
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* |
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* @return null|string |
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* The value converted as a string or null |
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*/ |
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protected function ensureString($data) |
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{ |
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$return = null; |
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switch (\gettype($data)) { |
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case 'string': |
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$return = $data; |
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break; |
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case 'integer': |
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case 'double': |
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$return = (string) $data; |
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break; |
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case 'object': |
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if (\method_exists($data, '__toString')) { |
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$return = $data->__toString(); |
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} |
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break; |
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case 'boolean': |
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case 'array': |
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default: |
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$return = null; |
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break; |
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} |
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return $return; |
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} |
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/** |
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* Make sure that the value parameters is converted into an |
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* array of strings. |
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* |
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* Only simple arrays (no nested arrays) are allowed here. |
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* Values that cannot be converted to strings will be removed from the |
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* resulting array. |
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* |
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* @param mixed[] $values |
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* The input values |
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* |
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* @return null[]|string[] |
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* The output values, should be an array of strings |
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*/ |
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protected function ensureStrings(array $values) |
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{ |
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return \array_values( |
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\array_filter( |
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\array_map( |
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[$this, 'ensureString'], |
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$values |
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), |
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'\is_string' |
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) |
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); |
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} |
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} |
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drupol /
htmltag
