IntlChar::enumCharNames

(PHP 7, PHP 8)

IntlChar::enumCharNames — Enumerate all assigned Unicode characters within a range

说明

public static IntlChar::enumCharNames(
    int|string $start,
    int|string $end,
    callable $callback,
    int $type = IntlChar::UNICODE_CHAR_NAME
): ?bool

Enumerate all assigned Unicode characters between the start and limit code points (start inclusive, limit exclusive) and call a function for each, passing the code point value and the character name.

For Unicode 1.0 names, only those are enumerated that differ from the modern names.

参数

start

The first code point in the enumeration range.

end

One more than the last code point in the enumeration range (the first one after the range).

callback

The function that is to be called for each character name. The following three arguments will be passed into it:

int $codepoint - The numeric code point value
int $nameChoice - The same value as the type parameter below
string $name - The name of the character

type

Selector for which kind of names to enumerate. Can be any of these constants:

IntlChar::UNICODE_CHAR_NAME (default)
IntlChar::UNICODE_10_CHAR_NAME
IntlChar::EXTENDED_CHAR_NAME
IntlChar::CHAR_NAME_ALIAS
IntlChar::CHAR_NAME_CHOICE_COUNT

返回值

成功时返回 null，或者在失败时返回 false。

示例

示例 #1 Enumerating over a sample range of code points

<?php
IntlChar::enumCharNames(0x2600, 0x2610, function($codepoint, $nameChoice, $name) {
    printf("U+%04x %s\n", $codepoint, $name);
});
?>

以上示例会输出：

 
U+2600 BLACK SUN WITH RAYS
U+2601 CLOUD
U+2602 UMBRELLA
U+2603 SNOWMAN
U+2604 COMET
U+2605 BLACK STAR
U+2606 WHITE STAR
U+2607 LIGHTNING
U+2608 THUNDERSTORM
U+2609 SUN
U+260a ASCENDING NODE
U+260b DESCENDING NODE
U+260c CONJUNCTION
U+260d OPPOSITION
U+260e BLACK TELEPHONE
U+260f WHITE TELEPHONE

参见

IntlChar::charName() - Retrieve the name of a Unicode character
IntlChar::charFromName() - Find Unicode character by name and return its code point value

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