(PHP 7 >= 7.3, PHP 8)
Normalizer::getRawDecomposition -- normalizer_get_raw_decomposition — 获取给定 UTF-8 编码代码点的 Decomposition_Mapping 属性
面向对象风格
$string, int $form = Normalizer::FORM_C): ?string过程式风格
获取给定 UTF-8 编码代码点的 Decomposition_Mapping 属性，如 Unicode 字符数据库 (UCD) 中所指定。
string输入字符串，应该是单个 UTF-8 编码的代码点。
如果 UCD 中存在 Decomposition_Mapping 属性，则返回包含 Decomposition_Mapping 属性的 string。
如果字符没有 Decomposition_Mapping 属性，则返回 null。
示例 #1 Normalizer::getRawDecomposition() 示例
<?php
$result = "";
$strings = [
"a",
"\u{FFDA}",
"\u{FDFA}",
"",
"aa",
"\xF5",
];
foreach ($strings as $string) {
$decomposition = Normalizer::getRawDecomposition($string);
// $decomposition = normalizer_get_raw_decomposition($string); 过程式方法
$error_code = intl_get_error_code();
$error_message = intl_get_error_message();
$string_hex = bin2hex($string);
$result .= "---------------------\n";
if ($decomposition === null) {
$result .= "'$string_hex' has no decomposition mapping\n" ;
} else {
$result .= "'$string_hex' has the decomposition mapping '" . bin2hex($decomposition) . "'\n" ;
}
$result .= "error info: '$error_message' ($error_code)\n";
}
echo $result;
?>上面的示例将输出
--------------------- '61' has no decomposition mapping error info: 'U_ZERO_ERROR' (0) --------------------- 'efbf9a' has the decomposition mapping 'e385a1' error info: 'U_ZERO_ERROR' (0) --------------------- 'efb7ba' has the decomposition mapping 'd8b5d984d98920d8a7d984d984d98720d8b9d984d98ad98720d988d8b3d984d985' error info: 'U_ZERO_ERROR' (0) --------------------- '' has no decomposition mapping error info: 'Input string must be exactly one UTF-8 encoded code point long.: U_ILLEGAL_ARGUMENT_ERROR' (1) --------------------- '6161' has no decomposition mapping error info: 'Input string must be exactly one UTF-8 encoded code point long.: U_ILLEGAL_ARGUMENT_ERROR' (1) --------------------- 'f5' has no decomposition mapping error info: 'Code point out of range: U_ILLEGAL_ARGUMENT_ERROR' (1)