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  • IntlChar::getPropertyValueName()

    版本:php7

    (PHP 7)

    Get the Unicode name for a property value

    说明

    publicstaticIntlChar::getPropertyValueName(int $property,int $value[,int $nameChoice= IntlChar::LONG_PROPERTY_NAME]): string

    Returns the Unicode name for a given property value, as given in the Unicode database file PropertyValueAliases.txt.

    Note:

    Some of the names in PropertyValueAliases.txt can only be retrieved using IntlChar::PROPERTY_GENERAL_CATEGORY_MASK, not IntlChar::PROPERTY_GENERAL_CATEGORY. These include:

    • "C"/ "Other"
    • "L"/ "Letter"
    • "LC"/ "Cased_Letter"
    • "M"/ "Mark"
    • "N"/ "Number"
    • "P"/ "Punctuation"
    • "S"/ "Symbol"
    • "Z"/ "Separator"

    参数

    $property

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

    If out of range, or this method doesn't work with the given value,FALSE is returned.

    $value

    Selector for a value for the given property. If out of range,FALSE is returned.

    In general, valid values range from0up to some maximum. There are a couple exceptions:

    • IntlChar::PROPERTY_BLOCK values begin at the non-zero value IntlChar::BLOCK_CODE_BASIC_LATIN
    • IntlChar::PROPERTY_CANONICAL_COMBINING_CLASS values are not contiguous and range from 0..240.
    $nameChoice

    Selector for which name to get. If out of range,FALSE is returned.

    All values have a long name. Most have a short name, but some do not. Unicode allows for additional names; if present these will be returned by adding 1, 2, etc. to IntlChar::LONG_PROPERTY_NAME.

    返回值

    Returns the name, or FALSE if either the$propertyor the$nameChoiceis out of range.

    If a given$nameChoicereturns FALSE, then all larger values of$nameChoicewill return FALSE, with one exception: if FALSE is returned for IntlChar::SHORT_PROPERTY_NAME, then IntlChar::LONG_PROPERTY_NAME(and higher)may still return a non-FALSE value.

    范例

    Testing different properties

    <?php
    var_dump(IntlChar::getPropertyValueName(IntlChar::PROPERTY_BLOCK, IntlChar::BLOCK_CODE_GREEK));
    var_dump(IntlChar::getPropertyValueName(IntlChar::PROPERTY_BLOCK, IntlChar::BLOCK_CODE_GREEK, IntlChar::SHORT_PROPERTY_NAME));
    var_dump(IntlChar::getPropertyValueName(IntlChar::PROPERTY_BLOCK, IntlChar::BLOCK_CODE_GREEK, IntlChar::LONG_PROPERTY_NAME));
    var_dump(IntlChar::getPropertyValueName(IntlChar::PROPERTY_BLOCK, IntlChar::BLOCK_CODE_GREEK, IntlChar::LONG_PROPERTY_NAME + 1));
    ?>
    

    以上例程会输出:

    string(16) "Greek_And_Coptic"
    string(5) "Greek"
    string(16) "Greek_And_Coptic"
    bool(false)