PHP Conference Nagoya 2025

    IntlChar::hasBinaryProperty

    (PHP 7, PHP 8)

    IntlChar::hasBinaryProperty — Check a binary Unicode property for a code point

    说明

    public static IntlChar::hasBinaryProperty(int|string $codepoint, int $property): ?bool

    Checks a binary Unicode property for a code point.

    Unicode, especially in version 3.2, defines many more properties than the original set in UnicodeData.txt.

    The properties APIs are intended to reflect Unicode properties as defined in the Unicode Character Database (UCD) and Unicode Technical Reports (UTR). For details about the properties see » http://www.unicode.org/ucd/. For names of Unicode properties see the UCD file PropertyAliases.txt.

    参数

    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}")

    property

    The Unicode property to lookup (see the IntlChar::PROPERTY_* constants).

    返回值

    Returns true or false according to the binary Unicode property value for codepoint. Also false if property is out of bounds or if the Unicode version does not have data for the property at all, or not for this code point. Returns null on failure.

    示例

    示例 #1 Testing different properties

    <?php
    var_dump    (IntlChar::hasBinaryProperty("A", IntlChar::PROPERTY_ALPHABETIC));
    var_dump(IntlChar::hasBinaryProperty("A", IntlChar::PROPERTY_CASE_SENSITIVE));
    var_dump(IntlChar::hasBinaryProperty("A", IntlChar::PROPERTY_BIDI_MIRRORED));
    var_dump(IntlChar::hasBinaryProperty("[", IntlChar::PROPERTY_ALPHABETIC));
    var_dump(IntlChar::hasBinaryProperty("[", IntlChar::PROPERTY_CASE_SENSITIVE));
    var_dump(IntlChar::hasBinaryProperty("[", IntlChar::PROPERTY_BIDI_MIRRORED));
    ?>

    以上示例会输出：

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

    参见

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