**Contents**show

## How do you check if a number is a whole number in PHP?

**The is_int() function** checks whether a variable is of type integer or not. This function returns true (1) if the variable is of type integer, otherwise it returns false.

## How do you find if something is a whole number?

You can multiply it by 10 and then do a “modulo” operation/divison with 10, and check if result of that two operations is zero. Result of that two operations will give you first digit after the decimal point. **If result is equal to zero** then the number is a whole number.

## How do you round to the nearest whole number in PHP?

**The ceil() function** is a built-in function in PHP and is used to round a number to the nearest greater integer. Parameters: The ceil() function accepts a single parameter value which represents the number which you want to round up to the nearest greater integer.

## What is PHP floor () function?

The floor() function is another in-built function in PHP iterpreter. This function **accepts any float number as argument and rounds it down to the next lowest integer**. This function always returns a float number as range of float is bigger than that of integer.

## Is a whole number?

**A whole number is any number that does not contain a fraction, decimal, or negative value**. For example, 1, 25, and 365 are whole numbers. Whereas the values of -3, 100.01, 365 ¼, and 2006.3 are not.

## Is not a number PHP?

The **is_numeric**() function is an inbuilt function in PHP which is used to check whether a variable passed in function as a parameter is a number or a numeric string or not. The function returns a boolean value. … Based on this verification, the function returns a boolean value.

## Which is greatest whole number?

So, 0, 1, 2, 3, 4…… are the whole numbers. We can clearly say that 1 is the smallest natural number and 0 is the smallest whole number. But **there is no largest whole number** because each number has its successor. Thus, there is no largest whole number.

## How do I round to 2 decimal places in PHP?

**$twoDecNum = sprintf**(‘%0.2f’, round($number, 2)); The rounding correctly rounds the number and the sprintf forces it to 2 decimal places if it happens to to be only 1 decimal place after rounding.

## How can I get 2 decimal places in PHP?

**Show a Number to Two Decimal Places in PHP**

- Use number_format() Function to Show a Number to Two Decimal Places in PHP.
- Use round() Function to Show a Number to Two Decimal Places in PHP.
- Use sprintf() Function to Show a Number to Two Decimal Places in PHP.

## Is PHP a float?

The is_float() function checks whether a variable is of type float or not. This function returns true (1) if the variable is of type float, otherwise it returns false.

## What is floor in C?

In the C Programming Language, the **floor function returns the largest integer that is smaller than or equal to x** (ie: rounds downs the nearest integer).

## How do you write a floor function?

The floor function (also known as the greatest integer function) ⌊ **⋅ ⌋ : R → Z lfloorcdotrfloor: mathbb{R} to mathbb{Z} ⌊⋅**⌋:R→Z of a real number x denotes the greatest integer less than or equal to x.

## How do you divide in PHP?

For integer division, see intdiv(). Operands of modulo are converted to int before processing.

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Arithmetic Operators.

Example | Name | Result |
---|---|---|

$a – $b | Subtraction | Difference of $a and $b . |

$a * $b | Multiplication | Product of $a and $b . |

$a / $b | Division | Quotient of $a and $b . |

$a % $b | Modulo | Remainder of $a divided by $b . |