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PHP - floatval() Function


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Definition and Usage

The floatval() function returns float value of a variable.

Syntax

float floatval ( mixed $value )

Parameters

Sr.No Parameter & Description
1

value

The variable whose corresponding float value will be returned. It maybe a scalar type. Do not pass objects to floatval() function. Doing so will produce an E_NOTICE level error and return 1.

Return Values

This function returns float value of a given variable.

  • If empty array is passed, floatval() returns 0.
  • If non-empty array is passed, floatval() returns 1.
  • If non-empty array is passed, return 1.
  • If String is passed, the floatval() will most likely return 0 although this depends on the leftmost characters of the string.

Dependencies

PHP 4.2 and above.

Example

Following example demonstrates return values with different types of variables −

<?php
   // PHP program demo for floatval() function with string variable
   $var1 = '133.1212The';
   echo floatval($var1); // 133.1212

   // PHP program demo for floatval() function with non-numeric leftmost characters
   $var2 = 'The133.1212';
   echo "<br>".floatval($var2); // 0

   // PHP program demo for floatval() function with numeric and comma
   $var3 = '1.999,369';
   echo "<br>".floatval($var3); // 1.999
?>

Output

This will produce following result −

133.1212
0
1.999
php_variable_handling_functions.htm

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