* An offset to check for. *
* @return boolean true on success or false on failure. * ** The return value will be casted to boolean if non-boolean was returned. * @since 5.0.0 */ public function offsetExists($offset) { if (is_scalar($offset)) { return array_key_exists($offset, $this->scalarStore); } if (is_object($offset)) { return $this->objectStore->offsetExists($offset); } if (is_array($offset)) { foreach ($this->arrayKeys as $index => $entry) { if ($entry === $offset) { $this->lastArrayKey = $offset; $this->lastArrayValue = $this->arrayValues[$index]; return true; } } } return false; } /** * Offset to retrieve * @link http://php.net/manual/en/arrayaccess.offsetget.php * @param mixed $offset
* The offset to retrieve. *
* @return mixed Can return all value types. * @since 5.0.0 */ public function offsetGet($offset) { if (is_scalar($offset)) { return $this->scalarStore[$offset]; } if (is_object($offset)) { return $this->objectStore->offsetGet($offset); } if (is_array($offset)) { // offsetGet is often called directly after offsetExists, so optimize to avoid second loop: if ($this->lastArrayKey === $offset) { return $this->lastArrayValue; } foreach ($this->arrayKeys as $index => $entry) { if ($entry === $offset) { return $this->arrayValues[$index]; } } } return null; } /** * Offset to set * @link http://php.net/manual/en/arrayaccess.offsetset.php * @param mixed $offset* The offset to assign the value to. *
* @param mixed $value* The value to set. *
* @return void * @since 5.0.0 */ public function offsetSet($offset, $value) { if (is_scalar($offset)) { $this->scalarStore[$offset] = $value; } else if (is_object($offset)) { $this->objectStore[$offset] = $value; } else if (is_array($offset)) { $this->arrayKeys[] = $offset; $this->arrayValues[] = $value; } else { throw new \InvalidArgumentException("Unexpected offset type: " . Utils::printSafe($offset)); } } /** * Offset to unset * @link http://php.net/manual/en/arrayaccess.offsetunset.php * @param mixed $offset* The offset to unset. *
* @return void * @since 5.0.0 */ public function offsetUnset($offset) { if (is_scalar($offset)) { unset($this->scalarStore[$offset]); } else if (is_object($offset)) { $this->objectStore->offsetUnset($offset); } else if (is_array($offset)) { $index = array_search($offset, $this->arrayKeys, true); if (false !== $index) { array_splice($this->arrayKeys, $index, 1); array_splice($this->arrayValues, $index, 1); } } } }