PHP Function: is_float

In PHP, the is_float function is used to determine whether a given variable is of the float data type. It returns true if the variable is a float, and false otherwise.

Syntax

The syntax for using the is_float function is:

bool is_float ( mixed $var )

Here, $var is the variable being checked.

Return Value

The is_float function returns a boolean value. It returns true if the variable is a float, and false otherwise.

Examples

Let's look at some examples to understand how the is_float function works:

$num1 = 3.14;
$num2 = 5;
$str = "Hello";

var_dump(is_float($num1));  // Output: bool(true)
var_dump(is_float($num2));  // Output: bool(false)
var_dump(is_float($str));   // Output: bool(false)

In the above example, $num1 is a float, so is_float($num1) returns true. However, $num2 is an integer, and $str is a string, so both is_float($num2) and is_float($str) return false.

Summary

The is_float function in PHP is used to determine whether a variable is of the float data type. It returns true if the variable is a float, and false otherwise. This function can be useful when you need to validate or check the data type of a variable in your PHP code.

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