Normalizer::getRawDecomposition

normalizer_get_raw_decomposition

Gets the Decomposition_Mapping property for the given UTF-8 encoded code point

Description

Object-oriented style

public static stringnull Normalizer::getRawDecomposition(string $string, int $form = Normalizer::FORM_C)

Procedural style

stringnull normalizer_get_raw_decomposition(string $string, int $form = Normalizer::FORM_C)

Gets the Decomposition_Mapping property, as specified in the Unicode Character Database (UCD), for the given UTF-8 encoded code point.

Parameters

string: The input string, which should be a single, UTF-8 encoded, code point.

Return Values

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.

Examples

Example #1 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;
?>

The above example will output:

---------------------
'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)