CTasks::parseFieldKey

static function parseFieldKey($key, $fieldName = '', $defaultOperator = '=')
{
	$operators = [
		'>=' => '>=',
		'<=' => '<=',
		'!=' => '!=',
		'%' => 'like',
		'=%' => 'like',
		'%=' => 'like',
		'=' => '=',
		'>' => '>',
		'<' => '<',
		'!' => '!=',
		'@' => 'in',
	];

	if ($fieldName)
	{
		$operator = str_replace($fieldName, '', $key);
		$operator = ($operator && isset($operators[$operator]) ? $operators[$operator] : $defaultOperator);
	}
	else
	{
		$pattern = '/^(' . implode('|', array_keys($operators)) . ')/';
		$matches = [];

		preg_match($pattern, $key, $matches);

		if (!empty($matches))
		{
			$operator = $operators[$matches[0]];
			$fieldName = str_replace($matches[0], '', $key);
		}
		else
		{
			$operator = $defaultOperator;
			$fieldName = $key;
		}
	}

	return [
		'OPERATOR' => $operator,
		'FIELD_NAME' => $fieldName,
	];
}