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<?php namespace Box\Spout\Common\Helper; /** * Class CellTypeHelper * This class provides helper functions to determine the type of the cell value */ class CellTypeHelper { /** * @param $value * @return bool Whether the given value is considered "empty" */ public static function isEmpty($value) { return ($value === null || $value === ''); } /** * @param $value * @return bool Whether the given value is a non empty string */ public static function isNonEmptyString($value) { return (\gettype($value) === 'string' && $value !== ''); } /** * Returns whether the given value is numeric. * A numeric value is from type "integer" or "double" ("float" is not returned by gettype). * * @param $value * @return bool Whether the given value is numeric */ public static function isNumeric($value) { $valueType = \gettype($value); return ($valueType === 'integer' || $valueType === 'double'); } /** * Returns whether the given value is boolean. * "true"/"false" and 0/1 are not booleans. * * @param $value * @return bool Whether the given value is boolean */ public static function isBoolean($value) { return \gettype($value) === 'boolean'; } /** * Returns whether the given value is a DateTime or DateInterval object. * * @param $value * @return bool Whether the given value is a DateTime or DateInterval object */ public static function isDateTimeOrDateInterval($value) { return ( $value instanceof \DateTime || $value instanceof \DateInterval ); } }
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