is_float()
is_float() — Finds whether the type of a variable is float.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
is_float(mixed $value): bool
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $value | mixed | The variable being evaluated. |
Return value
Returns true if value is a float, false otherwise.
Example
A runnable snippet:
var_dump(is_float(27.25)); var_dump(is_float('abc')); var_dump(is_float(23)); var_dump(is_float(23.5)); var_dump(is_float(1e7)); //Scientific Notation var_dump(is_float(true));
Output:
bool(true) bool(false) bool(false) bool(true) bool(true) bool(false)
See also
is_bool(), is_int(), is_numeric(), is_string(), is_array(), is_object()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page is_float() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.