Ответ 4
У нас есть веб-приложение, которое должно было отправить данные в унаследованную систему, которая могла обрабатывать только первые 128 символов набора символов ASCII.
Решение, которое мы должны использовать, было чем-то, что бы "перевести" как можно больше символов в эквивалентные ASCII эквиваленты, но оставить все, что невозможно перевести в одиночку.
Обычно я делал бы что-то вроде этого:
<?php
// transliterate
if (function_exists('iconv')) {
$text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
}
?>
... но это заменяет все, что невозможно перевести на знак вопроса (?).
Итак, мы закончили делать следующее. Проверьте в конце этой функции для (прокомментированного) php regex, который просто вычеркивает не-ASCII-символы.
<?php
public function cleanNonAsciiCharactersInString($orig_text) {
$text = $orig_text;
// Single letters
$text = preg_replace("/[∂άαáàâãªä]/u", "a", $text);
$text = preg_replace("/[∆лДΛдАÁÀÂÃÄ]/u", "A", $text);
$text = preg_replace("/[ЂЪЬБъь]/u", "b", $text);
$text = preg_replace("/[βвВ]/u", "B", $text);
$text = preg_replace("/[çς©с]/u", "c", $text);
$text = preg_replace("/[ÇС]/u", "C", $text);
$text = preg_replace("/[δ]/u", "d", $text);
$text = preg_replace("/[éèêëέëèεе℮ёєэЭ]/u", "e", $text);
$text = preg_replace("/[ÉÈÊË€ξЄ€Е∑]/u", "E", $text);
$text = preg_replace("/[₣]/u", "F", $text);
$text = preg_replace("/[НнЊњ]/u", "H", $text);
$text = preg_replace("/[ђћЋ]/u", "h", $text);
$text = preg_replace("/[ÍÌÎÏ]/u", "I", $text);
$text = preg_replace("/[íìîïιίϊі]/u", "i", $text);
$text = preg_replace("/[Јј]/u", "j", $text);
$text = preg_replace("/[ΚЌК]/u", 'K', $text);
$text = preg_replace("/[ќк]/u", 'k', $text);
$text = preg_replace("/[ℓ∟]/u", 'l', $text);
$text = preg_replace("/[Мм]/u", "M", $text);
$text = preg_replace("/[ñηήηπⁿ]/u", "n", $text);
$text = preg_replace("/[Ñ∏пПИЙийΝЛ]/u", "N", $text);
$text = preg_replace("/[óòôõºöοФσόо]/u", "o", $text);
$text = preg_replace("/[ÓÒÔÕÖθΩθОΩ]/u", "O", $text);
$text = preg_replace("/[ρφрРф]/u", "p", $text);
$text = preg_replace("/[®яЯ]/u", "R", $text);
$text = preg_replace("/[ГЃгѓ]/u", "r", $text);
$text = preg_replace("/[Ѕ]/u", "S", $text);
$text = preg_replace("/[ѕ]/u", "s", $text);
$text = preg_replace("/[Тт]/u", "T", $text);
$text = preg_replace("/[τ†‡]/u", "t", $text);
$text = preg_replace("/[úùûüџμΰµυϋύ]/u", "u", $text);
$text = preg_replace("/[√]/u", "v", $text);
$text = preg_replace("/[ÚÙÛÜЏЦц]/u", "U", $text);
$text = preg_replace("/[Ψψωώẅẃẁщш]/u", "w", $text);
$text = preg_replace("/[ẀẄẂШЩ]/u", "W", $text);
$text = preg_replace("/[ΧχЖХж]/u", "x", $text);
$text = preg_replace("/[ỲΫ¥]/u", "Y", $text);
$text = preg_replace("/[ỳγўЎУуч]/u", "y", $text);
$text = preg_replace("/[ζ]/u", "Z", $text);
// Punctuation
$text = preg_replace("/[‚‚]/u", ",", $text);
$text = preg_replace("/[`‛′’‘]/u", "'", $text);
$text = preg_replace("/[″""«»„]/u", '"', $text);
$text = preg_replace("/[—–―−–‾⌐─↔→←]/u", '-', $text);
$text = preg_replace("/[ ]/u", ' ', $text);
$text = str_replace("…", "...", $text);
$text = str_replace("≠", "!=", $text);
$text = str_replace("≤", "<=", $text);
$text = str_replace("≥", ">=", $text);
$text = preg_replace("/[‗≈≡]/u", "=", $text);
// Exciting combinations
$text = str_replace("ыЫ", "bl", $text);
$text = str_replace("℅", "c/o", $text);
$text = str_replace("₧", "Pts", $text);
$text = str_replace("™", "tm", $text);
$text = str_replace("№", "No", $text);
$text = str_replace("Ч", "4", $text);
$text = str_replace("‰", "%", $text);
$text = preg_replace("/[∙•]/u", "*", $text);
$text = str_replace("‹", "<", $text);
$text = str_replace("›", ">", $text);
$text = str_replace("‼", "!!", $text);
$text = str_replace("⁄", "/", $text);
$text = str_replace("∕", "/", $text);
$text = str_replace("⅞", "7/8", $text);
$text = str_replace("⅝", "5/8", $text);
$text = str_replace("⅜", "3/8", $text);
$text = str_replace("⅛", "1/8", $text);
$text = preg_replace("/[‰]/u", "%", $text);
$text = preg_replace("/[Љљ]/u", "Ab", $text);
$text = preg_replace("/[Юю]/u", "IO", $text);
$text = preg_replace("/[fifl]/u", "fi", $text);
$text = preg_replace("/[зЗ]/u", "3", $text);
$text = str_replace("£", "(pounds)", $text);
$text = str_replace("₤", "(lira)", $text);
$text = preg_replace("/[‰]/u", "%", $text);
$text = preg_replace("/[↨↕↓↑│]/u", "|", $text);
$text = preg_replace("/[∞∩∫⌂⌠⌡]/u", "", $text);
//2) Translation CP1252.
$trans = get_html_translation_table(HTML_ENTITIES);
$trans['f'] = 'ƒ'; // Latin Small Letter F With Hook
$trans['-'] = array(
'…', // Horizontal Ellipsis
'˜', // Small Tilde
'–' // Dash
);
$trans["+"] = '†'; // Dagger
$trans['#'] = '‡'; // Double Dagger
$trans['M'] = '‰'; // Per Mille Sign
$trans['S'] = 'Š'; // Latin Capital Letter S With Caron
$trans['OE'] = 'Œ'; // Latin Capital Ligature OE
$trans["'"] = array(
'‘', // Left Single Quotation Mark
'’', // Right Single Quotation Mark
'›', // Single Right-Pointing Angle Quotation Mark
'‚', // Single Low-9 Quotation Mark
'ˆ', // Modifier Letter Circumflex Accent
'‹' // Single Left-Pointing Angle Quotation Mark
);
$trans['"'] = array(
'“', // Left Double Quotation Mark
'”', // Right Double Quotation Mark
'„', // Double Low-9 Quotation Mark
);
$trans['*'] = '•'; // Bullet
$trans['n'] = '–'; // En Dash
$trans['m'] = '—'; // Em Dash
$trans['tm'] = '™'; // Trade Mark Sign
$trans['s'] = 'š'; // Latin Small Letter S With Caron
$trans['oe'] = 'œ'; // Latin Small Ligature OE
$trans['Y'] = 'Ÿ'; // Latin Capital Letter Y With Diaeresis
$trans['euro'] = '€'; // euro currency symbol
ksort($trans);
foreach ($trans as $k => $v) {
$text = str_replace($v, $k, $text);
}
// 3) remove <p>, <br/> ...
$text = strip_tags($text);
// 4) & => & " => '
$text = html_entity_decode($text);
// transliterate
// if (function_exists('iconv')) {
// $text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
// }
// remove non ascii characters
// $text = preg_replace('/[\x00-\x1F\x80-\xFF]/', '', $text);
return $text;
}
?>
