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    IntlChar::iscntrl

    (PHP 7, PHP 8)

    IntlChar::iscntrl — Check if code point is a control character

    Descrição

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

    Determines whether the specified code point is a control character.

    A control character is one of the following:

    • ISO 8-bit control character (U+0000..U+001f and U+007f..U+009f)
    • IntlChar::CHAR_CATEGORY_CONTROL_CHAR (Cc)
    • IntlChar::CHAR_CATEGORY_FORMAT_CHAR (Cf)
    • IntlChar::CHAR_CATEGORY_LINE_SEPARATOR (Zl)
    • IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR (Zp)

    Parâmetros

    codepoint

    Um codepoint integer (por exemplo 0x2603 para U+2603 SNOWMAN), ou um caracter codificado como uma string UTF-8 (exemplo "\u{2603}")

    Valor Retornado

    Returns true if codepoint is a control character, false if not.

    Exemplos

    Exemplo #1 Testando codepoints diferentes

    <?php
    var_dump    (IntlChar::iscntrl("A"));
    var_dump(IntlChar::iscntrl(" "));
    var_dump(IntlChar::iscntrl("\n"));
    var_dump(IntlChar::iscntrl("\u{200e}"));
    ?>

    O exemplo acima irá imprimir:

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

    Veja Também

    • IntlChar::isprint() - Check if code point is a printable character
    • IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT

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