# PHPExcel_Calculation_Logical

class
**PHPExcel_Calculation_Logical**

PHPExcel*Calculation*Logical

Copyright (c) 2006 - 2015 PHPExcel

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This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

## Methods

TRUE

FALSE

LOGICAL_AND

LOGICAL_OR

NOT

STATEMENT_IF

IFERROR

## Details

###
at line 71
```
static boolean
```**TRUE**()

**TRUE**()

TRUE

Returns the boolean TRUE.

Excel Function: =TRUE()

###
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```
static boolean
```**FALSE**()

**FALSE**()

FALSE

Returns the boolean FALSE.

Excel Function: =FALSE()

###
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```
static boolean
```**LOGICAL_AND**()

**LOGICAL_AND**()

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
```

###
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```
static boolean
```**LOGICAL_OR**()

**LOGICAL_OR**()

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
```

###
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```
static boolean
```**NOT**(mixed $logical = false)

**NOT**(mixed $logical = false)

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
```

###
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```
static mixed
```**STATEMENT_IF**(mixed $condition = true, mixed $returnIfTrue, mixed $returnIfFalse = false)

**STATEMENT_IF**(mixed $condition = true, mixed $returnIfTrue, mixed $returnIfFalse = false)

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.
```

###
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```
static mixed
```**IFERROR**(mixed $testValue = '', mixed $errorpart = '')

**IFERROR**(mixed $testValue = '', mixed $errorpart = '')

IFERROR

Excel Function: =IFERROR(testValue,errorpart)