jclaveau / php-logical-filter

     *

     * @return array The 3 dimensions array of operands: field > operator > i

     */

    public function groupOperandsByFieldAndOperator()

    {

        $operandsByFields = [];

        foreach ($this->operands as $operand) {

            // Operation rules have no field but we need to keep them anyway

            $field = method_exists($operand, 'getField') ? $operand->getField() : '';

            // For FilteredValue and FilteredKey

            $field = (string) $field;

            if ( ! isset($operandsByFields[ $field ])) {

                $operandsByFields[ $field ] = [];

            }

            if ( ! isset($operandsByFields[ $field ][ $operand::operator ])) {

                $operandsByFields[ $field ][ $operand::operator ] = [];

            }

            $operandsByFields[ $field ][ $operand::operator ][] = $operand;

        }

        return $operandsByFields;

    }

    /**

     * Indexes operands by their fields and operators. This sorting is

     *

     * @return array The 3 dimensions array of operands: field > operator > i

     */

    protected static function groupOperandsByFieldAndOperator_static($operands)

    {

        $operandsByFields = [];

        foreach ($operands as $operand) {

            // Operation rules have no field but we need to keep them anyway

            $field = method_exists($operand, 'getField') ? $operand->getField() : '';

            // For FilteredValue and FilteredKey

            $field = (string) $field;

            if ( ! isset($operandsByFields[ $field ])) {

                $operandsByFields[ $field ] = [];

            }

            if ( ! isset($operandsByFields[ $field ][ $operand::operator ])) {

                $operandsByFields[ $field ][ $operand::operator ] = [];

            }

            $operandsByFields[ $field ][ $operand::operator ][] = $operand;

        }

        return $operandsByFields;

    }

    /**

     * Clones the rule and its operands.