# PHP Floating Point Data Type

PHPServer Side ProgrammingProgramming

## Definition and Usage

In PHP, float data type represents any number with a provision to contain a fractional part. The fractional part may contain digits after decimal point, or may be represented in scientific notation using either e or E. For example 100 in scientific notation is 10e2.

Size of a float depends on the hardware/OS platform, although precision upto 14 digits after decimal point is commonly found.

## Syntax

//Literal assignment of float value to variable
$var=5327.496; // standard notation$var1=5.327496e3; // Scientific notation
$var2=5.327496E3; //Scientific notation$var3=5_327.496; //sepration symbol

For better readibility, integer literal may use "_" as separation symbol which will be omitted by PHP scanner while processing.

echo $var . "\n"; ?> ## Output This will produce following result − 5327.496 This Example uses scientific notation ## Example <?php$var1=5.327496e3; <br />
echo $var . "\n";<br />$var2=5.327496E3; <br />
echo $var . "\n"; ?> ## Output This will produce following result − 5327.496 5327.496 This example using separation symbol "_" (This will run for PHP 7.40 onwards) ## Example <?php$var3=5_327.496;
echo \$var . "\n";
?>

## Output

This will produce following result −

5327.496
Published on 19-Sep-2020 14:31:53