(PHP 7, PHP 8)
IntlChar::isdigit — Check if code point is a digit character
Determines whether the specified code point is a digit character.
true
for characters with general category "Nd" (decimal digit numbers). Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal.
Returns true
if
codepoint
is a digit character, false
if not. Returns null
on failure.
Example #1 Testing different code points
<?phpvar_dump(IntlChar::isdigit("A"));var_dump(IntlChar::isdigit("1"));var_dump(IntlChar::isdigit("\t"));?>
The above example will output:
bool(false) bool(true) bool(false)