PHP function is_nan()
Availability in versions: PHP 4.2.0
Finds whether a value is not a number
Parameters
| Parameter | Data type | Default value | Note |
|---|---|---|---|
$val |
float |
not | The value to check |
Return values
bool
true if val is 'not a number', else false.
Availability in versions: PHP 4.2.0
Finds whether a value is not a number
| Parameter | Data type | Default value | Note |
|---|---|---|---|
$val |
float |
not | The value to check |
bool
true if val is 'not a number', else false.
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