Normalizer::getRawDecomposition()
normalizer_get_raw_decomposition
(PHP 7 >= 7.3)
Gets the Decomposition_Mapping property for the given UTF-8 encoded code point
说明
面向对象风格public static Normalizer::getRawDecomposition(string $input): string
过程化风格
normalizer_get_raw_decomposition(string $input): string
Gets the Decomposition_Mapping property, as specified in the Unicode Character Database(UCD), for the given UTF-8 encoded code point.
参数
- $input
The input string, which should be a single, UTF-8 encoded, code point.
返回值
Returns a string containing the Decomposition_Mapping property, if present in the UCD.
Returns NULL if there is no Decomposition_Mapping property for the character.
范例
Normalizer::getRawDecomposition() example
<?php
$result = "";
$strings = [
"a",
"\u{FFDA}",
"\u{FDFA}",
"",
"aa",
"\xF5",
];
foreach ($strings as $string) {
$decomposition = Normalizer::getRawDecomposition($string);
// $decomposition = normalizer_get_raw_decomposition($string); Procedural way
$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;
?>
以上例程会输出：
--------------------- '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)
参见
- Normalizer::normalize() Normalizes the input provided and returns the normalized string
- Normalizer::isNormalized() Checks if the provided string is already in the specified normalization form