PHP 7.0.6 Released

    IntlChar::isIDIgnorable

    (PHP 7)

    IntlChar::isIDIgnorable — Check if code point is an ignorable character

    Description

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

    Determines if the specified character should be regarded as an ignorable character in an identifier.

    TRUE for characters with general category "Cf" (format controls) as well as non-whitespace ISO controls (U+0000..U+0008, U+000E..U+001B, U+007F..U+009F).

    Note:

    Note that Unicode just recommends to ignore Cf (format controls).

    Parameters

    codepoint

    The integer 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 ignorable in identifiers, FALSE if not.

    Examples

    Example #1 Testing different code points

    <?php
    var_dump    (IntlChar::isIDIgnorable("A"));
    var_dump(IntlChar::isIDIgnorable(" "));
    var_dump(IntlChar::isIDIgnorable("\u{007F}"));
    ?>

    The above example will output:

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

    See Also

    • IntlChar::isIDStart() - Check if code point is permissible as the first character in an identifier
    • IntlChar::isIDPart() - Check if code point is permissible in an identifier
    • IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT

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