PHP Function: is_real

In PHP, the is_real function is used to determine whether a given variable is of the type “real” or “float”. It returns true if the variable is a real number, and false otherwise.

Syntax

The syntax for the is_real function is:

bool is_real ( mixed $var )

Here, $var is the variable being evaluated.

Return Value

The is_real function returns true if the variable is a real number, and false otherwise.

Examples

Let’s take a look at some examples to understand how the is_real function works:

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

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

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

Important Note

It’s important to note that the is_real function is an alias of the is_float function in PHP. Both functions can be used interchangeably to check if a variable is a real number.

Summary

The is_real function in PHP is used to determine whether a variable is a real number or not. It returns true if the variable is a real number, and false otherwise. It can be used interchangeably with the is_float function. To learn more about VPS hosting solutions, visit Server.HK.