Check if code point is a letter character
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    IntlChar::isalpha

    (PHP 7, PHP 8)

    IntlChar::isalpha — Check if code point is a letter character

    Description

    public static IntlChar::isalpha(int|string $codepoint): ?bool

    Determines whether the specified code point is a letter character. true for general categories "L" (letters).

    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 a letter character, false if not. Returns null on failure.

    Examples

    Example #1 Testing different code points

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

    The above example will output:

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

    See Also