Viewing file:  Logical.php (14.37 KB) -rw-r--r--
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<?php
namespace PhpOffice\PhpSpreadsheet\Calculation;
class Logical
{
/**
* TRUE.
*
* Returns the boolean TRUE.
*
* Excel Function:
* =TRUE()
*
* @return bool True
*/
public static function true()
{
return true;
}
/**
* FALSE.
*
* Returns the boolean FALSE.
*
* Excel Function:
* =FALSE()
*
* @return bool False
*/
public static function false()
{
return false;
}
private static function countTrueValues(array $args)
{
$returnValue = 0;
foreach ($args as $arg) {
// Is it a boolean value?
if (is_bool($arg)) {
$returnValue += $arg;
} elseif ((is_numeric($arg)) && (!is_string($arg))) {
$returnValue += ((int) $arg != 0);
} elseif (is_string($arg)) {
$arg = strtoupper($arg);
if (($arg == 'TRUE') || ($arg == Calculation::getTRUE())) {
$arg = true;
} elseif (($arg == 'FALSE') || ($arg == Calculation::getFALSE())) {
$arg = false;
} else {
return Functions::VALUE();
}
$returnValue += ($arg != 0);
}
}
return $returnValue;
}
/**
* LOGICAL_AND.
*
* Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.
*
* Excel Function:
* =AND(logical1[,logical2[, ...]])
*
* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
* or references that contain logical values.
*
* Boolean arguments are treated as True or False as appropriate
* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
*
* @param mixed ...$args Data values
*
* @return bool|string the logical AND of the arguments
*/
public static function logicalAnd(...$args)
{
$args = Functions::flattenArray($args);
if (count($args) == 0) {
return Functions::VALUE();
}
$args = array_filter($args, function ($value) {
return $value !== null || (is_string($value) && trim($value) == '');
});
$argCount = count($args);
$returnValue = self::countTrueValues($args);
if (is_string($returnValue)) {
return $returnValue;
}
return ($returnValue > 0) && ($returnValue == $argCount);
}
/**
* LOGICAL_OR.
*
* Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.
*
* Excel Function:
* =OR(logical1[,logical2[, ...]])
*
* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
* or references that contain logical values.
*
* Boolean arguments are treated as True or False as appropriate
* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
*
* @param mixed $args Data values
*
* @return bool|string the logical OR of the arguments
*/
public static function logicalOr(...$args)
{
$args = Functions::flattenArray($args);
if (count($args) == 0) {
return Functions::VALUE();
}
$args = array_filter($args, function ($value) {
return $value !== null || (is_string($value) && trim($value) == '');
});
$returnValue = self::countTrueValues($args);
if (is_string($returnValue)) {
return $returnValue;
}
return $returnValue > 0;
}
/**
* LOGICAL_XOR.
*
* Returns the Exclusive Or logical operation for one or more supplied conditions.
* i.e. the Xor function returns TRUE if an odd number of the supplied conditions evaluate to TRUE, and FALSE otherwise.
*
* Excel Function:
* =XOR(logical1[,logical2[, ...]])
*
* The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays
* or references that contain logical values.
*
* Boolean arguments are treated as True or False as appropriate
* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
*
* @param mixed $args Data values
*
* @return bool|string the logical XOR of the arguments
*/
public static function logicalXor(...$args)
{
$args = Functions::flattenArray($args);
if (count($args) == 0) {
return Functions::VALUE();
}
$args = array_filter($args, function ($value) {
return $value !== null || (is_string($value) && trim($value) == '');
});
$returnValue = self::countTrueValues($args);
if (is_string($returnValue)) {
return $returnValue;
}
return $returnValue % 2 == 1;
}
/**
* NOT.
*
* Returns the boolean inverse of the argument.
*
* Excel Function:
* =NOT(logical)
*
* The argument must evaluate to a logical value such as TRUE or FALSE
*
* Boolean arguments are treated as True or False as appropriate
* Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False
* If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds
* the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value
*
* @param mixed $logical A value or expression that can be evaluated to TRUE or FALSE
*
* @return bool|string the boolean inverse of the argument
*/
public static function NOT($logical = false)
{
$logical = Functions::flattenSingleValue($logical);
if (is_string($logical)) {
$logical = strtoupper($logical);
if (($logical == 'TRUE') || ($logical == Calculation::getTRUE())) {
return false;
} elseif (($logical == 'FALSE') || ($logical == Calculation::getFALSE())) {
return true;
}
return Functions::VALUE();
}
return !$logical;
}
/**
* STATEMENT_IF.
*
* Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.
*
* Excel Function:
* =IF(condition[,returnIfTrue[,returnIfFalse]])
*
* Condition is any value or expression that can be evaluated to TRUE or FALSE.
* For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,
* the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.
* This argument can use any comparison calculation operator.
* ReturnIfTrue is the value that is returned if condition evaluates to TRUE.
* For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,
* then the IF function returns the text "Within budget"
* If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use
* the logical value TRUE for this argument.
* ReturnIfTrue can be another formula.
* ReturnIfFalse is the value that is returned if condition evaluates to FALSE.
* For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,
* then the IF function returns the text "Over budget".
* If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.
* If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.
* ReturnIfFalse can be another formula.
*
* @param mixed $condition Condition to evaluate
* @param mixed $returnIfTrue Value to return when condition is true
* @param mixed $returnIfFalse Optional value to return when condition is false
*
* @return mixed The value of returnIfTrue or returnIfFalse determined by condition
*/
public static function statementIf($condition = true, $returnIfTrue = 0, $returnIfFalse = false)
{
if (Functions::isError($condition)) {
return $condition;
}
$condition = ($condition === null) ? true : (bool) Functions::flattenSingleValue($condition);
$returnIfTrue = ($returnIfTrue === null) ? 0 : Functions::flattenSingleValue($returnIfTrue);
$returnIfFalse = ($returnIfFalse === null) ? false : Functions::flattenSingleValue($returnIfFalse);
return ($condition) ? $returnIfTrue : $returnIfFalse;
}
/**
* STATEMENT_SWITCH.
*
* Returns corresponding with first match (any data type such as a string, numeric, date, etc).
*
* Excel Function:
* =SWITCH (expression, value1, result1, value2, result2, ... value_n, result_n [, default])
*
* Expression
* The expression to compare to a list of values.
* value1, value2, ... value_n
* A list of values that are compared to expression. The SWITCH function is looking for the first value that matches the expression.
* result1, result2, ... result_n
* A list of results. The SWITCH function returns the corresponding result when a value matches expression.
* default
* Optional. It is the default to return if expression does not match any of the values (value1, value2, ... value_n).
*
* @param mixed $arguments Statement arguments
*
* @return mixed The value of matched expression
*/
public static function statementSwitch(...$arguments)
{
$result = Functions::VALUE();
if (count($arguments) > 0) {
$targetValue = Functions::flattenSingleValue($arguments[0]);
$argc = count($arguments) - 1;
$switchCount = floor($argc / 2);
$switchSatisfied = false;
$hasDefaultClause = $argc % 2 !== 0;
$defaultClause = $argc % 2 === 0 ? null : $arguments[count($arguments) - 1];
if ($switchCount) {
for ($index = 0; $index < $switchCount; ++$index) {
if ($targetValue == $arguments[$index * 2 + 1]) {
$result = $arguments[$index * 2 + 2];
$switchSatisfied = true;
break;
}
}
}
if (!$switchSatisfied) {
$result = $hasDefaultClause ? $defaultClause : Functions::NA();
}
}
return $result;
}
/**
* IFERROR.
*
* Excel Function:
* =IFERROR(testValue,errorpart)
*
* @param mixed $testValue Value to check, is also the value returned when no error
* @param mixed $errorpart Value to return when testValue is an error condition
*
* @return mixed The value of errorpart or testValue determined by error condition
*/
public static function IFERROR($testValue = '', $errorpart = '')
{
$testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
$errorpart = ($errorpart === null) ? '' : Functions::flattenSingleValue($errorpart);
return self::statementIf(Functions::isError($testValue), $errorpart, $testValue);
}
/**
* IFNA.
*
* Excel Function:
* =IFNA(testValue,napart)
*
* @param mixed $testValue Value to check, is also the value returned when not an NA
* @param mixed $napart Value to return when testValue is an NA condition
*
* @return mixed The value of errorpart or testValue determined by error condition
*/
public static function IFNA($testValue = '', $napart = '')
{
$testValue = ($testValue === null) ? '' : Functions::flattenSingleValue($testValue);
$napart = ($napart === null) ? '' : Functions::flattenSingleValue($napart);
return self::statementIf(Functions::isNa($testValue), $napart, $testValue);
}
/**
* IFS.
*
* Excel Function:
* =IFS(testValue1;returnIfTrue1;testValue2;returnIfTrue2;...;testValue_n;returnIfTrue_n)
*
* testValue1 ... testValue_n
* Conditions to Evaluate
* returnIfTrue1 ... returnIfTrue_n
* Value returned if corresponding testValue (nth) was true
*
* @param mixed ...$arguments Statement arguments
*
* @return mixed|string The value of returnIfTrue_n, if testValue_n was true. #N/A if none of testValues was true
*/
public static function IFS(...$arguments)
{
if (count($arguments) % 2 != 0) {
return Functions::NA();
}
// We use instance of Exception as a falseValue in order to prevent string collision with value in cell
$falseValueException = new Exception();
for ($i = 0; $i < count($arguments); $i += 2) {
$testValue = ($arguments[$i] === null) ? '' : Functions::flattenSingleValue($arguments[$i]);
$returnIfTrue = ($arguments[$i + 1] === null) ? '' : Functions::flattenSingleValue($arguments[$i + 1]);
$result = self::statementIf($testValue, $returnIfTrue, $falseValueException);
if ($result !== $falseValueException) {
return $result;
}
}
return Functions::NA();
}
}
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