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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation; |
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class Logical |
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{ |
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/** |
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* TRUE. |
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* |
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* Returns the boolean TRUE. |
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* |
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* Excel Function: |
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* =TRUE() |
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* |
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* @category Logical Functions |
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* |
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* @return bool True |
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*/ |
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public static function true() |
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{ |
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return true; |
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} |
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/** |
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* FALSE. |
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* |
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* Returns the boolean FALSE. |
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* |
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* Excel Function: |
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* =FALSE() |
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* |
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* @category Logical Functions |
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* |
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* @return bool False |
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*/ |
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public static function false() |
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{ |
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return false; |
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} |
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private static function countTrueValues(array $args) |
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{ |
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$returnValue = 0; |
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foreach ($args as $arg) { |
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// Is it a boolean value? |
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if (is_bool($arg)) { |
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$returnValue += $arg; |
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} elseif ((is_numeric($arg)) && (!is_string($arg))) { |
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$returnValue += ((int) $arg != 0); |
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} elseif (is_string($arg)) { |
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$arg = strtoupper($arg); |
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if (($arg == 'TRUE') || ($arg == Calculation::getTRUE())) { |
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$arg = true; |
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} elseif (($arg == 'FALSE') || ($arg == Calculation::getFALSE())) { |
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$arg = false; |
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} else { |
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return Functions::VALUE(); |
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} |
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$returnValue += ($arg != 0); |
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} |
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} |
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return $returnValue; |
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} |
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/** |
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* LOGICAL_AND. |
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* |
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* Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE. |
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* |
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* Excel Function: |
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* =AND(logical1[,logical2[, ...]]) |
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* |
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays |
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* or references that contain logical values. |
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* |
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* Boolean arguments are treated as True or False as appropriate |
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False |
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds |
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value |
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* |
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* @category Logical Functions |
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* |
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* @param mixed ...$args Data values |
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* |
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* @return bool|string the logical AND of the arguments |
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*/ |
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public static function logicalAnd(...$args) |
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{ |
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$args = Functions::flattenArray($args); |
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if (count($args) == 0) { |
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return Functions::VALUE(); |
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} |
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$args = array_filter($args, function ($value) { |
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return $value !== null || (is_string($value) && trim($value) == ''); |
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}); |
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$argCount = count($args); |
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$returnValue = self::countTrueValues($args); |
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if (is_string($returnValue)) { |
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return $returnValue; |
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} |
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return ($returnValue > 0) && ($returnValue == $argCount); |
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} |
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/** |
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* LOGICAL_OR. |
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* |
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* Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE. |
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* |
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* Excel Function: |
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* =OR(logical1[,logical2[, ...]]) |
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* |
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays |
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* or references that contain logical values. |
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* |
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* Boolean arguments are treated as True or False as appropriate |
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False |
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds |
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value |
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* |
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* @category Logical Functions |
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* |
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* @param mixed $args Data values |
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* |
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* @return bool|string the logical OR of the arguments |
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*/ |
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public static function logicalOr(...$args) |
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{ |
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$args = Functions::flattenArray($args); |
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if (count($args) == 0) { |
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return Functions::VALUE(); |
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} |
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$args = array_filter($args, function ($value) { |
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return $value !== null || (is_string($value) && trim($value) == ''); |
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}); |
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$returnValue = self::countTrueValues($args); |
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if (is_string($returnValue)) { |
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return $returnValue; |
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} |
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return $returnValue > 0; |
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} |
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/** |
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* LOGICAL_XOR. |
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* |
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* Returns the Exclusive Or logical operation for one or more supplied conditions. |
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* i.e. the Xor function returns TRUE if an odd number of the supplied conditions evaluate to TRUE, and FALSE otherwise. |
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* |
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* Excel Function: |
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* =XOR(logical1[,logical2[, ...]]) |
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* |
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* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays |
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* or references that contain logical values. |
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* |
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* Boolean arguments are treated as True or False as appropriate |
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False |
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds |
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value |
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* |
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* @category Logical Functions |
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* |
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* @param mixed $args Data values |
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* |
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* @return bool|string the logical XOR of the arguments |
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*/ |
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public static function logicalXor(...$args) |
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{ |
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$args = Functions::flattenArray($args); |
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if (count($args) == 0) { |
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return Functions::VALUE(); |
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} |
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$args = array_filter($args, function ($value) { |
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return $value !== null || (is_string($value) && trim($value) == ''); |
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}); |
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$returnValue = self::countTrueValues($args); |
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if (is_string($returnValue)) { |
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return $returnValue; |
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} |
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return $returnValue % 2 == 1; |
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} |
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/** |
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* NOT. |
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* |
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* Returns the boolean inverse of the argument. |
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* |
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* Excel Function: |
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* =NOT(logical) |
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* |
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* The argument must evaluate to a logical value such as TRUE or FALSE |
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* |
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* Boolean arguments are treated as True or False as appropriate |
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* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False |
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* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds |
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* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value |
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* |
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* @category Logical Functions |
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* |
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* @param mixed $logical A value or expression that can be evaluated to TRUE or FALSE |
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* |
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* @return bool|string the boolean inverse of the argument |
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*/ |
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public static function NOT($logical = false) |
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{ |
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$logical = Functions::flattenSingleValue($logical); |
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if (is_string($logical)) { |
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$logical = strtoupper($logical); |
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if (($logical == 'TRUE') || ($logical == Calculation::getTRUE())) { |
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return false; |
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} elseif (($logical == 'FALSE') || ($logical == Calculation::getFALSE())) { |
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return true; |
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} |
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return Functions::VALUE(); |
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} |
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return !$logical; |
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} |
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/** |
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* STATEMENT_IF. |
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* |
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* Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE. |
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* |
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* Excel Function: |
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* =IF(condition[,returnIfTrue[,returnIfFalse]]) |
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* |
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* Condition is any value or expression that can be evaluated to TRUE or FALSE. |
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* For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100, |
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* the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE. |
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* This argument can use any comparison calculation operator. |
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* ReturnIfTrue is the value that is returned if condition evaluates to TRUE. |
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* For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE, |
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* then the IF function returns the text "Within budget" |
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* If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use |
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* the logical value TRUE for this argument. |
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* ReturnIfTrue can be another formula. |
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* ReturnIfFalse is the value that is returned if condition evaluates to FALSE. |
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* For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE, |
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* then the IF function returns the text "Over budget". |
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* If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned. |
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* If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned. |
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* ReturnIfFalse can be another formula. |
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* |
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* @category Logical Functions |
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* |
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* @param mixed $condition Condition to evaluate |
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* @param mixed $returnIfTrue Value to return when condition is true |
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* @param mixed $returnIfFalse Optional value to return when condition is false |
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* |
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* @return mixed The value of returnIfTrue or returnIfFalse determined by condition |
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*/ |
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public static function statementIf($condition = true, $returnIfTrue = 0, $returnIfFalse = false) |
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{ |
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$condition = ($condition === null) ? true : (bool) Functions::flattenSingleValue($condition); |
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$returnIfTrue = ($returnIfTrue === null) ? 0 : Functions::flattenSingleValue($returnIfTrue); |
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$returnIfFalse = ($returnIfFalse === null) ? false : Functions::flattenSingleValue($returnIfFalse); |
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return ($condition) ? $returnIfTrue : $returnIfFalse; |
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} |
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/** |
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* IFERROR. |
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* |
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* Excel Function: |
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* =IFERROR(testValue,errorpart) |
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* |
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* @category Logical Functions |
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* |
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* @param mixed $testValue Value to check, is also the value returned when no error |
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* @param mixed $errorpart Value to return when testValue is an error condition |
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* |
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* @return mixed The value of errorpart or testValue determined by error condition |
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*/ |
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public static function IFERROR($testValue = '', $errorpart = '') |
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{ |
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$testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue); |
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$errorpart = ($errorpart === null) ? '' : Functions::flattenSingleValue($errorpart); |
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return self::statementIf(Functions::isError($testValue), $errorpart, $testValue); |
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} |
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} |
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