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    IntlChar::isalnum

    (PHP 7, PHP 8)

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

    Descrizione

    public static IntlChar::isalnum(int|string $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).

    Elenco dei parametri

    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}")

    Valori restituiti

    Returns true if codepoint is an alphanumeric character, false if not. Returns null on failure.

    Esempi

    Example #1 Testing different code points

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

    Il precedente esempio visualizzerà:

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

    Vedere anche:

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