PHP code example of nick-jones / php-ucd

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

nick-jones / php-ucd example snippets

use UCD\Unicode\Character;
use UCD\Unicode\Character\Properties\General\Block;
use UCD\Database;

$filter = function (Character $character) {
    $properties = $character->getProperties();
    $general = $properties->getGeneral();
    $block = $general->getBlock();

    return $properties->isNumeric()
        && !$block->equals(Block::fromValue(Block::BASIC_LATIN));
};

$dumper = function (Character $character) {
    $codepoint = $character->getCodepoint();
    $properties = $character->getProperties();
    $numerity = $properties->getNumericity();
    $number = $numerity->getNumber();
    $utf8 = $codepoint->toUTF8();

    printf("%s: %s (~ %s)\n", $codepoint, $utf8, $number);
};

Database::fromDisk()
    ->onlyCharacters()
    ->filterWith($filter)
    ->traverseWith($dumper);

// outputting:
//  U+B2: ² (~ 2)
//  U+B3: ³ (~ 3)
//  U+B9: ¹ (~ 1)
//  U+BC: ¼ (~ 1/4)
//  U+BD: ½ (~ 1/2)
//  U+BE: ¾ (~ 3/4)
//  U+660: ٠ (~ 0)
//  U+661: ١ (~ 1)
//  U+662: ٢ (~ 2)
//  U+663: ٣ (~ 3)
//  <snip>

use UCD\Database;
use UCD\Unicode\Codepoint;

$database = Database::fromDisk();
$codepoint = Codepoint::fromInt(9731);
// ..or $codepoint = Codepoint::fromHex('2603');
// ..or $codepoint = Codepoint::fromUTF8('☃');
$character = $collection->getCharacterByCodepoint($codepoint);
$properties = $character->getProperties();
$general = $properties->getGeneral();
$names = $general->getNames();

// prints "U+2603: SNOWMAN"
printf("%s: %s\n", $character->getCodepoint(), $names->getPrimary());

use UCD\Database;
use UCD\Unicode\Codepoint;

$database = Database::fromDisk();
$string = 'abc';
$codepoints = Codepoint\Collection::fromUTF8($string);
$assigned = $database->getByCodepoints($codepoints);

foreach ($assigned->getCharacters() as $character) {
    $properties = $character->getProperties();
    $general = $properties->getGeneral();
    $names = $general->getNames();

    printf("%s: %s\n", $character->getCodepoint(), $names->getPrimary());
}

// outputting:
//  U+61: LATIN SMALL LETTER A
//  U+62: LATIN SMALL LETTER B
//  U+63: LATIN SMALL LETTER C

use UCD\Database;
use UCD\Unicode\Character;
use UCD\Unicode\Character\Properties\General\Block;

$filter = function (Character $character) {
    $properties = $character->getProperties();
    $general = $properties->getGeneral();
    $block = $general->getBlock();

    return $properties->isNumeric()
        && $block->equals(Block::fromValue(Block::BENGALI));
};

$cc = Database::fromDisk()
    ->onlyCharacters()
    ->filterWith($filter)
    ->extractCodepoints()
    ->aggregate()
    ->toRegexCharacterClass();

$regex = sprintf('/^%s$/u', $cc);

var_dump($regex); // string(37) "/^[\x{9E6}-\x{9EF}\x{9F4}-\x{9F9}]$/u"
var_dump(preg_match($regex, '১')); // int(1)
var_dump(preg_match($regex, '1')); // int(0)

use UCD\Database;

$characters = Database::fromDisk()
    ->onlyCharacters();

echo 'static $map = [' . PHP_EOL;

foreach ($characters as $character) {
    $codepoint = $character->getCodepoint();
    $properties = $character->getProperties();
    $case = $properties->getLetterCase();
    $mappings = $case->getMappings();
    $upperMapping = $mappings->getUppercase();
    $upper = $upperMapping->getSimple();

    if (!$upper->equals($codepoint)) {
        $from = $codepoint->toUnicodeEscape();
        $to = $upper->toUnicodeEscape();
        printf('    "%s" => "%s",', $from, $to);
        echo PHP_EOL;
    }
}

echo '];';

// outputting:
//  static $map = [
//      "\u{61}" => "\u{41}",
//      "\u{62}" => "\u{42}",
//      "\u{63}" => "\u{43}",
//      <snip>
//      "\u{1E942}" => "\u{1E920}",
//      "\u{1E943}" => "\u{1E921}",
//  ];

$lower = 'aς!';
$upper = '';

for ($i = 0; $i < mb_strlen($lower); $i++) {
    $char = mb_substr($lower, $i, 1);
    $upper .= $map[$char] ?? $char;
}

var_dump($upper); // string(4) "AΣ!"