IntlBreakIterator 类

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    简介

    “断点迭代器”是一个 ICU 对象，它提供了用于在文本中定位边界（例如单词或句子边界）的方法。PHP 的 IntlBreakIterator 作为所有类型 ICU 断点迭代器的基类。如果存在额外功能，intl 扩展程序可能会使用合适的子类公开 ICU 断点迭代器，例如 IntlRuleBasedBreakIterator 或 IntlCodePointBreakIterator.

    此类实现了 IteratorAggregate。遍历 IntlBreakIterator 会产生非负整数，表示文本边界的后继位置，以 UTF-8 代码单元（字节）计数表示，从文本开头（位置为 0）开始。迭代器产生的键只是构成自然数序列 {0, 1, 2, …}。

    类概要

    class IntlBreakIterator implements IteratorAggregate {
    /* 常量 */
    public const int DONE;
    public const int WORD_NONE;
    public const int WORD_NONE_LIMIT;
    public const int WORD_NUMBER;
    public const int WORD_NUMBER_LIMIT;
    public const int WORD_LETTER;
    public const int WORD_LETTER_LIMIT;
    public const int WORD_KANA;
    public const int WORD_KANA_LIMIT;
    public const int WORD_IDEO;
    public const int WORD_IDEO_LIMIT;
    public const int LINE_SOFT;
    public const int LINE_SOFT_LIMIT;
    public const int LINE_HARD;
    public const int LINE_HARD_LIMIT;
    public const int SENTENCE_TERM;
    public const int SENTENCE_TERM_LIMIT;
    public const int SENTENCE_SEP;
    public const int SENTENCE_SEP_LIMIT;
    /* 方法 */
    private __construct()
    public static createCharacterInstance(?string $locale = null): ?IntlBreakIterator
    public static createCodePointInstance(): IntlCodePointBreakIterator
    public static createLineInstance(?string $locale = null): ?IntlBreakIterator
    public static createSentenceInstance(?string $locale = null): ?IntlBreakIterator
    public static createTitleInstance(?string $locale = null): ?IntlBreakIterator
    public static createWordInstance(?string $locale = null): ?IntlBreakIterator
    public current(): int
    public first(): int
    public following(int $offset): int
    public getErrorCode(): int
    public getErrorMessage(): string
    public getLocale(int $type): string|false
    public getPartsIterator(string $type = IntlPartsIterator::KEY_SEQUENTIAL): IntlPartsIterator
    public getText(): ?string
    public isBoundary(int $offset): bool
    public last(): int
    public next(?int $offset = null): int
    public preceding(int $offset): int
    public previous(): int
    public setText(string $text): bool
    }

    变更日志

    版本 描述
    8.0.0 IntlBreakIterator 现在实现了 IteratorAggregate。之前实现了 Traversable。

    目录

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    用户贡献的注释 1 则注释

    12
    SenseException
    10 年前
    由于目前还没有关于 IntlBreakIterator 用法的示例，我做了一个简单的示例

    <?php

    $text     = "Si contano i danni. Un morto a Roma, un treno ".
    "deragliato e quattro feriti a Foggia, strade chiuse in tutto ".
    "il sud, allagamenti e danni sulla costa ionica. A Pescara, ".
    "1.500 sfollati per l'esondazione del Fosso Vallelunga. ".
    "Dall'inizio dell'anno l'agricoltura ha subito un miliardo ".
    "di euro di danni.";

    $locale = 'it_IT';

    $i = IntlBreakIterator::createSentenceInstance($locale);
    $i->setText($text);

    foreach(    $i->getPartsIterator() as $sentence) {
    echo     $sentence . PHP_EOL . '----- next -----' . PHP_EOL;
    }

    ?>

    结果

    Si contano i danni.
    ----- next -----
    Un morto a Roma, un treno deragliato e quattro feriti a Foggia, strade chiuse in tutto il sud, allagamenti e danni sulla costa ionica.
    ----- next -----
    A Pescara, 1.500 sfollati per l'esondazione del Fosso Vallelunga.
    ----- next -----
    Dall'inizio dell'anno l'agricoltura ha subito un miliardo di euro di danni.
    ----- next -----
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