PHP - is_float() Function

Definition and Usage

The is_float () function is used to test whether a variable is a float or not.

Syntax

bool is_float (mixed   $value)

Parameters

Return Values

This function returns true if value is a float, false otherwise.

Dependencies

PHP 4 and above

Example

Following example demonstrates return values with different types of variables −

<?php
   var_dump(is_float(4.01));    //outputs-bool(true)
   var_dump(is_float('ter'));   //outputs-bool(false)
   var_dump(is_float(44));      //outputs-bool(false)
   var_dump(is_float(44.8));    //outputs-bool(true)
   var_dump(is_float(3e7));     //Scientific Notation    //outputs-bool(true)
   var_dump(is_float(false));   //outputs-bool(false)
?>

Output

This will produce following result −

bool(true)
bool(false)
bool(false)
bool(true)
bool(true)
bool(false)