← All built-ins / is_numeric()
is_numeric()
is_numeric(mixed $number): bool
Parameters
| Name | Type | Description |
|---|---|---|
| $v | mixed | value to test |
Return value
true for ints, floats and numeric strings like "42" or "3.5".
Example
var_dump(is_numeric("42"));
var_dump(is_numeric("3.5"));
var_dump(is_numeric("4e2"));
var_dump(is_numeric("abc"));bool(true) bool(true) bool(true) bool(false)