Php/docs/intlchar.isalnum

• PHP Manual
• IntlChar
• Check if code point is an alphanumeric character

IntlChar::isalnum

(PHP 7)

IntlChar::isalnum — Check if code point is an alphanumeric character

Description

public static IntlChar::isalnum ( mixed $codepoint ) : bool

Determines whether the specified code point is an alphanumeric character (letter or digit). TRUE for characters with general categories "L" (letters) and "Nd" (decimal digit numbers).

Parameters

codepoint

The int codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

Return Values

Returns TRUE if codepoint is an alphanumeric character, FALSE if not.

Examples

Example #1 Testing different code points

<?phpvar_dump(IntlChar::isalnum("A"));var_dump(IntlChar::isalnum("1"));var_dump(IntlChar::isalnum("\u{2603}"));?>

The above example will output:

bool(true)
bool(true)
bool(false)

See Also

• IntlChar::isalpha() - Check if code point is a letter character
• IntlChar::isdigit() - Check if code point is a digit character