Online PHP editor | rfc for CTWqo

@ 2016-03-30T16:48:26Z

<?php

/*
 * By Darien Hager, Jan 2007... Use however you wish, but please
 * please give credit in source comments.
 *
 * Change "UTF-8" to whichever encoding you are expecting to use.
 */
function ords_to_unistr($ords, $encoding = 'UTF-8') {
    // Turns an array of ordinal values into a string of unicode characters
    $str = '';
    for ($i = 0; $i < count($ords); $i++) {
        // Pack this number into a 4-byte string
        // (Or multiple one-byte strings, depending on context.)
        $v = $ords[$i];
        $str .= pack("N",$v);
    }
    $str = mb_convert_encoding($str,$encoding,"UCS-4BE");
    return($str);
}

function unistr_to_ords($str, $encoding = 'UTF-8') {
    // Turns a string of unicode characters into an array of ordinal values,
    // Even if some of those characters are multibyte.
    $str = mb_convert_encoding($str,"UCS-4BE",$encoding);
    $ords = array();

    // Visit each unicode character
    for ($i = 0; $i < mb_strlen($str,"UCS-4BE"); $i++) {
        // Now we have 4 bytes. Find their total
        // numeric value.
        $s2 = mb_substr($str,$i,1,"UCS-4BE");
        $val = unpack("N",$s2);
        $ords[] = $val[1];
    }
    return($ords);
}

function alphabet($firstCharacter = 'A', $lastCharacter = 'Z') {
    $firstCharacterValue = unistr_to_ords($firstCharacter)[0];
    $lastCharacterValue = unistr_to_ords($lastCharacter)[0];

    if ($firstCharacterValue < $lastCharacterValue) {
        for ($character = $firstCharacterValue; $character <= $lastCharacterValue; ++$character) {
            yield ords_to_unistr(array($character));
        };
    } else {
        for ($character = $firstCharacterValue; $character >= $lastCharacterValue; --$character) {
            yield ords_to_unistr(array($character));
        };
    }
}

foreach (alphabet('ا', 'ی') as $letter) {
    echo $letter, PHP_EOL;
}

Output for git.master, git.master_jit, rfc.property-hooks: ا ب ة ت ث ج ح خ د ذ ر ز س ش ص ض ط ظ ع غ ػ ؼ ؽ ؾ ؿ ـ ف ق ك ل م ن ه و ى ي ً ٌ ٍ َ ُ ِ ّ ْ ٓ ٔ ٕ ٖ ٗ ٘ ٙ ٚ ٛ ٜ ٝ ٞ ٟ ٠ ١ ٢ ٣ ٤ ٥ ٦ ٧ ٨ ٩ ٪ ٫ ٬ ٭ ٮ ٯ ٰ ٱ ٲ ٳ ٴ ٵ ٶ ٷ ٸ ٹ ٺ ٻ ټ ٽ پ ٿ ڀ ځ ڂ ڃ ڄ څ چ ڇ ڈ ډ ڊ ڋ ڌ ڍ ڎ ڏ ڐ ڑ ڒ ړ ڔ ڕ ږ ڗ ژ ڙ ښ ڛ ڜ ڝ ڞ ڟ ڠ ڡ ڢ ڣ ڤ ڥ ڦ ڧ ڨ ک ڪ ګ ڬ ڭ ڮ گ ڰ ڱ ڲ ڳ ڴ ڵ ڶ ڷ ڸ ڹ ں ڻ ڼ ڽ ھ ڿ ۀ ہ ۂ ۃ ۄ ۅ ۆ ۇ ۈ ۉ ۊ ۋ ی

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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