如何在PHP中创建utf-8 `ł‘(Polish)的How实体？

Question

"ł“不是实体性的原因是什么?

对于一般不在中的字符，是如何实现的呢？

get_html_translation_table的内容是如何指定/定义的？

(这里只讲utf-8 )

// control with 'ö'
php > echo htmlentities("ö",ENT_COMPAT,'utf-8');
ö

// test with 'ł'
php > echo htmlentities("ł",ENT_COMPAT,'utf-8');
ł

检查get_html_translation_table

php > var_dump(implode(',',array_keys(
                 get_html_translation_table(HTML_ENTITIES))));

// produces
// (why is ł not there?):
string(843) "",&,<,>, ,¡,¢,£,¤,¥,¦,§,¨,©,ª,«,¬,­,®,¯,°,±,²,³,´,µ,¶,·,¸,¹,º,»,¼,½,¾
,¿,À,Á,Â,Ã,Ä,Å,Æ,Ç,È,É,Ê,Ë,Ì,Í,Î,Ï,Ð,Ñ,Ò,Ó,Ô,Õ,Ö,×,Ø,Ù,Ú,Û,Ü,Ý,Þ,ß,à,á,â,ã,ä,å,æ
,ç,è,é,ê,ë,ì,í,î,ï,ð,ñ,ò,ó,ô,õ,ö,÷,ø,ù,ú,û,ü,ý,þ,ÿ,Œ,œ,Š,š,Ÿ,ƒ,ˆ,˜,Α,Β,Γ,Δ,Ε,Ζ,Η
,Θ,Ι,Κ,Λ,Μ,Ν,Ξ,Ο,Π,Ρ,Σ,Τ,Υ,Φ,Χ,Ψ,Ω,α,β,γ,δ,ε,ζ,η,θ,ι,κ,λ,μ,ν,ξ,ο,π,ρ,ς,σ,τ,υ,φ,χ
,ψ,ω,ϑ,ϒ,ϖ, , , ,,,,,–,—,‘,’,‚,“,”,„,†,‡,•,…,‰,′,″,‹,›,‾,⁄,€,ℑ,℘,ℜ,™,ℵ,←,↑,→,↓,↔
,↵,⇐,⇑,⇒,⇓,⇔,∀,∂,∃,∅,∇,∈,∉,∋,∏,∑,−,∗,√,∝,∞,∠,∧,∨,∩,∪,∫,∴,∼,≅,≈,≠,≡,≤,≥,⊂,⊃,⊄,⊆,⊇
,⊕,⊗,⊥,⋅,⌈,⌉,⌊,⌋,⟨,⟩,◊,♠,♣,♥,♦"

PHP 5.6.12

Answer 1

您需要使用ENT_HTML5标志将代码作为HTML5处理。

echo htmlentities("ł", ENT_COMPAT | ENT_HTML5, 'utf-8');

Answer 2

php 5.3..。您可以在下面为UTF-8更改此功能(ISO-8859-2，WIN-1250)。

<?php
if (!function_exists('htmlentities_polish')) { function htmlentities_polish($string) {

    if (!$GLOBALS['msFunc']['htmlentities_polish']['entities']) {
        $ignore = str_split('ACELNOSXZacelnosxz');  // Right Alt + that letter, on 'polish programmers keyboard' (or tilde (~) + that letter)
        // polish characters: Ą Ć Ę Ł Ń Ó Ś Ź Ż ą ć ę ł ń ó ś ź ż
        foreach ($ignore as &$value) {
            if (stripos('ae', $value)!==FALSE) $value .= 'ogon';
            else if (strtolower($value)==='l') $value .= 'strok';
            else if (strtolower($value)==='z') $value .= 'dot';
            else $value .= 'acute';
            $value = '&'.strtr($value, 'Xx' /* Z, z acute */, 'Zz').';';
            // See also: https://www.w3schools.com/charsets/ref_utf_latin_extended_a.asp , https://www.w3schools.com/charsets/ref_utf_latin1_supplement.asp
        }
        unset($value);
        $GLOBALS['msFunc']['htmlentities_polish']['entities'] = $ignore;

        $iso = array(161,198,202,163,209,211,166,172,175,177,230,234,179,241,243,182,188,191);  // ISO-8859-2
        foreach ($iso as &$value) { $value = chr($value);}
        $GLOBALS['msFunc']['htmlentities_polish']['iso'] = $iso;
        unset($value);

        $win = array(165,198,202,163,209,211,140,143,175,185,230,234,179,241,243,156,159,191);  // WINDOWS-1250 (WINDOWS-EE)
        foreach ($win as &$value) { $value = chr($value);}
        $GLOBALS['msFunc']['htmlentities_polish']['win'] = $win;
        unset($value);
    }


    /* Convert "everything" (win and iso) ... */
    if (!$GLOBALS['msFunc']['htmlentities_polish']['isowin']) { // Note: in assumption, it is within first call of htmlentities_polish() and isset($win)===TRUE etc. !
        $GLOBALS['msFunc']['htmlentities_polish']['isowin']=$diff=array_merge($iso, array_diff($win, $iso));
        $flip_win = array_flip($win);
        for ($i=count($iso); $i<count($diff); $i++) {
            $GLOBALS['msFunc']['htmlentities_polish']['entities'][$i] = $GLOBALS['msFunc']['htmlentities_polish']['entities'][$flip_win[$diff[$i]]];
        }
    }

    return str_replace($GLOBALS['msFunc']['htmlentities_polish']['isowin'], $GLOBALS['msFunc']['htmlentities_polish']['entities'], $string);

    /* ...or charset checking - in 2 ways:
    $diff = array_diff($GLOBALS['msFunc']['htmlentities_polish']['iso'], $GLOBALS['msFunc']['htmlentities_polish']['win']); // characters different between ISO-8859-2 and WINDOWS-1250

    // (1) fast but stupid way
    foreach ($diff as $value) {
        if (strpos($string, $value)!==FALSE) return str_replace($GLOBALS['msFunc']['htmlentities_polish']['iso'], $GLOBALS['msFunc']['htmlentities_polish']['entities'], $string);
    }   // entities from ISO-8859-2 and return !
    // otherwise // entities from WINDOWS-1250 and return :
    return str_replace($GLOBALS['msFunc']['htmlentities_polish']['win'], $GLOBALS['msFunc']['htmlentities_polish']['entities'], $string);

    // (2) slow but exact way 
    foreach (str_split($string) as $value) {
        if (in_array($value, $diff)) $iso_c++;
    }
    $diff = array_diff($GLOBALS['msFunc']['htmlentities_polish']['win'], $GLOBALS['msFunc']['htmlentities_polish']['iso']);
    foreach (str_split($string) as $value) {
        if (in_array($value, $diff)) $win_c++;
    }
    if ($win_c>$iso_c) return str_replace($GLOBALS['msFunc']['htmlentities_polish']['win'], $GLOBALS['msFunc']['htmlentities_polish']['entities'], $string);
    else return str_replace($GLOBALS['msFunc']['htmlentities_polish']['iso'], $GLOBALS['msFunc']['htmlentities_polish']['entities'], $string);
    */
// polish characters: Ą Ć Ę Ł Ń Ó Ś Ź Ż ą ć ę ł ń ó ś ź ż
}
}
?>