The Normalizer class
(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL intl >= 1.0.0)
簡介
Normalization is a process that involves transforming characters and sequences of characters into a formally-defined underlying representation. This process is most important when text needs to be compared for sorting and searching, but it is also used when storing text to ensure that the text is stored in a consistent representation.
The Unicode Consortium has defined a number of normalization forms reflecting the various needs of applications:
- Normalization Form D (NFD) - Canonical Decomposition
- Normalization Form C (NFC) - Canonical Decomposition followed by Canonical Composition
- Normalization Form KD (NFKD) - Compatibility Decomposition
- Normalization Form KC (NFKC) - Compatibility Decomposition followed by Canonical Composition
類摘要
class Normalizer
{
/* 方法 */
}預定義常量
The following constants define the normalization form used by the normalizer:
-
Normalizer::FORM_C(int) - Normalization Form C (NFC) - Canonical Decomposition followed by Canonical Composition
-
Normalizer::FORM_D(int) - Normalization Form D (NFD) - Canonical Decomposition
-
Normalizer::FORM_KC(int) - Normalization Form KC (NFKC) - Compatibility Decomposition, followed by Canonical Composition
-
Normalizer::FORM_KD(int) - Normalization Form KD (NFKD) - Compatibility Decomposition
-
Normalizer::NONE(int) - No decomposition/composition
-
Normalizer::OPTION_DEFAULT(int) - Default normalization options
目錄
- Normalizer::getRawDecomposition — Gets the Decomposition_Mapping property for the given UTF-8 encoded code point
- Normalizer::isNormalized — Checks if the provided string is already in the specified normalization form
- Normalizer::normalize — Normalizes the input provided and returns the normalized string