By using this function, we can check that the input value is float or not. This function was introduced in PHP 4.0.
bool is_float ( mixed $var )
| Parameter | Description | Is compulsory |
|---|---|---|
| var | The variable being evaluated. | compulsory |
The is_float() function returns TRUE if the var_name is float, otherwise false.
<?php $x=123.41; echo is_float($x); ?>
Output:
<?php $a=123.41; $b=12; var_dump (is_float($a)); var_dump (is_float($b)); ?>
Output:
<?php
$var_name=126.56;
if (is_float($var_name))
echo 'This is a float value.<br>';
else
echo 'This is not a float value.<br>';
var_dump(is_float('rookienerd'));
echo '<br>';
var_dump(is_float(85));
?>Output:
It is a configuration setting in php.ini used to specify a total number of digits displayed in floating point number.
