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(PHP 7, PHP 8)
IntlChar::getPropertyValueName — Get the Unicode name for a property value
$property, int $value, int $type = IntlChar::LONG_PROPERTY_NAME): string|false
Returns the Unicode name for a given property value, as given in the Unicode database file PropertyValueAliases.txt.
注意:
Some of the names in PropertyValueAliases.txt can only be retrieved using
IntlChar::PROPERTY_GENERAL_CATEGORY_MASK, notIntlChar::PROPERTY_GENERAL_CATEGORY. These include:
- "C" / "Other"
- "L" / "Letter"
- "LC" / "Cased_Letter"
- "M" / "Mark"
- "N" / "Number"
- "P" / "Punctuation"
- "S" / "Symbol"
- "Z" / "Separator"
property
The Unicode property to lookup (see the IntlChar::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 from 0 up 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.
type
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.
Returns the name, or false if either the property or the type
is out of range. Returns null on failure.
If a given type returns false, then all larger values of type
will 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.
示例 #1 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)
