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<?php |
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/** |
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* Created by PhpStorm. |
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* User: seboettg |
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* Date: 09.05.18 |
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* Time: 17:50 |
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*/ |
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namespace Seboettg\Collection; |
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trait ArrayListTrait |
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{ |
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/** |
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* internal array |
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* |
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* @var array |
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*/ |
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protected $array; |
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/** |
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* flush array list |
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* |
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* @return $this |
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*/ |
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public function clear() |
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{ |
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$this->array = []; |
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return $this; |
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} |
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/** |
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* returns element with key $key |
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* @param $key |
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* @return mixed|null |
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*/ |
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public function get($key) |
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{ |
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return isset($this->array[$key]) ? $this->array[$key] : null; |
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} |
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/** |
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* Returns the value of the array element that's currently being pointed to by the |
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* internal pointer. It does not move the pointer in any way. If the |
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* internal pointer points beyond the end of the elements list or the array is |
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* empty, current returns false. |
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* |
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* @return mixed|false |
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*/ |
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public function current() |
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{ |
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return current($this->array); |
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} |
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/** |
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* Advance the internal array pointer of an array. |
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* Returns the array value in the next place that's pointed to by the |
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* internal array pointer, or false if there are no more elements. |
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* |
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* @return mixed|false |
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*/ |
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public function next() |
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{ |
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return next($this->array); |
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} |
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/** |
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* Rewind the internal array pointer. |
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* Returns the array value in the previous place that's pointed to by |
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* the internal array pointer, or false if there are no more |
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* |
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* @return mixed|false |
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*/ |
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public function prev() |
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{ |
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return prev($this->array); |
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} |
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/** |
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* Inserts or replaces the element at the specified position in this list with the specified element. |
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* |
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* @param $key |
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* @param $element |
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* @return $this |
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*/ |
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public function set($key, $element) |
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{ |
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$this->array[$key] = $element; |
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return $this; |
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} |
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/** |
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* overrides contents of ArrayList with the contents of $array |
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* @param array $array |
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* @return $this |
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*/ |
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public function setArray(array $array) |
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{ |
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return $this->replace($array); |
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} |
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/** |
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* Appends the specified element to the end of this list. |
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* |
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* @param $element |
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* @return $this |
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*/ |
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public function append($element) |
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{ |
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$this->array[] = $element; |
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return $this; |
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} |
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/** |
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* Inserts the specified element at the specified position in this list. If an other element already exist at the |
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* specified position the affected positions will transformed into a numerated array. As well the existing element |
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* as the specified element will be appended to this array. |
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* |
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* @param $key |
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* @param $element |
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* @return $this |
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*/ |
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public function add($key, $element) |
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{ |
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if (!array_key_exists($key, $this->array)) { |
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$this->array[$key] = $element; |
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} elseif (is_array($this->array[$key])) { |
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$this->array[$key][] = $element; |
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} else { |
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$this->array[$key] = [$this->array[$key], $element]; |
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} |
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return $this; |
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} |
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/** |
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* Removes the element at the specified position in this list. |
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* |
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* @param $key |
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* @return $this |
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*/ |
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public function remove($key) |
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{ |
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unset($this->array[$key]); |
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return $this; |
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} |
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/** |
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* Returns true if an element exists on the specified position. |
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* |
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* @param mixed $key |
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* @return bool |
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*/ |
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public function hasKey($key) |
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{ |
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return array_key_exists($key, $this->array); |
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} |
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/** |
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* Returns true if the specified value exists in this list. Uses PHP's array_search function |
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* @link http://php.net/manual/en/function.array-search.php |
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* |
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* @param string $value |
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* |
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* @return mixed |
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*/ |
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public function hasValue($value) |
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{ |
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$result = array_search($value, $this->array, true); |
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return ($result !== false); |
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} |
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/** |
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* replaces this list by the specified array |
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* @param array $data |
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* |
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* @return ArrayList |
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*/ |
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public function replace(array $data) |
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{ |
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$this->array = $data; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getIterator() |
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{ |
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return new \ArrayIterator($this->array); |
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} |
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/** |
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* Offset to retrieve |
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* @link http://php.net/manual/en/arrayaccess.offsetget.php |
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* @param mixed $offset The offset to retrieve. |
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* |
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* @return mixed Can return all value types. |
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*/ |
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public function offsetGet($offset) |
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{ |
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return isset($this->array[$offset]) ? $this->array[$offset] : null; |
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} |
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/** |
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* Offset to set |
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* @link http://php.net/manual/en/arrayaccess.offsetset.php |
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* @param mixed $offset The offset to assign the value to. |
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* @param mixed $value The value to set. |
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*/ |
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public function offsetSet($offset, $value) |
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{ |
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$this->array[$offset] = $value; |
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} |
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/** |
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* Whether a offset exists |
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* @link http://php.net/manual/en/arrayaccess.offsetexists.php |
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* |
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* @param mixed $offset |
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* @return bool |
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*/ |
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public function offsetExists($offset) |
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{ |
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return isset($this->array[$offset]); |
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} |
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/** |
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* Offset to unset |
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* @link http://php.net/manual/en/arrayaccess.offsetunset.php |
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* @param mixed $offset The offset to unset. |
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*/ |
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public function offsetUnset($offset) |
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{ |
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unset($this->array[$offset]); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function toArray() |
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{ |
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return $this->array; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function count() |
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{ |
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return count($this->array); |
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} |
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/** |
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* Shuffles this list (randomizes the order of the elements in). It uses the PHP function shuffle |
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* @see http://php.net/manual/en/function.shuffle.php |
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* @return $this |
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*/ |
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public function shuffle() { |
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shuffle($this->array); |
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return $this; |
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} |
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/** |
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* returns a clone of this ArrayList, filtered by the given closure function |
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* @param \Closure $closure |
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* @return ArrayList |
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*/ |
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public function filter(\Closure $closure) |
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{ |
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return new ArrayList(array_filter($this->array, $closure)); |
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} |
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/** |
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* returns a clone of this ArrayList, filtered by the given array keys |
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* @param array $keys |
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* @return ArrayList |
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*/ |
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public function filterByKeys(array $keys) |
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{ |
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return new ArrayList( |
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array_filter($this->array, function($key) use ($keys) { |
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return array_search($key, $keys) !== false; |
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}, ARRAY_FILTER_USE_KEY) |
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); |
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} |
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/** |
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* returns a new ArrayList containing all the elements of this ArrayList after applying the callback function to each one. |
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* @param \closure $mapFunction |
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* @return ArrayList |
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*/ |
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public function map(\closure $mapFunction) |
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{ |
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return new ArrayList(array_map($mapFunction, $this->array)); |
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} |
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/** |
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* Returns a new ArrayList containing an one-dimensional array of all elements of this ArrayList. Keys are going lost. |
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* @return ArrayList |
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*/ |
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public function flatten() |
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{ |
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$flattenedArray = []; |
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array_walk_recursive($this->array, function($item) use(&$flattenedArray) { |
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$flattenedArray[] = $item; |
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}); |
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return new ArrayList($flattenedArray); |
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} |
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} |
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