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<?php |
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/** |
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* TUtf8Converter class file |
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* |
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* @author Fabio Bas <[email protected]> |
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* @link https://github.com/pradosoft/prado |
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* @license https://github.com/pradosoft/prado/blob/master/LICENSE |
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*/ |
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namespace Prado\Util; |
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/** |
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* TUtf8Converter class. |
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* |
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* TUtf8Converter is a simple wrapper around iconv functions to convert |
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* strings from and to UTF-8. |
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* |
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* @author Fabio Bas <[email protected]> |
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* @since 4.0.2 |
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*/ |
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class TUtf8Converter |
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{ |
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/** |
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* Convert strings to UTF-8 via iconv. NB, the result may not by UTF-8 |
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* if the conversion failed. |
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* @param string $string string to convert to UTF-8 |
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* @param string $from source encoding |
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* @param ?string $lang Language of the encoding as accepted by PHP setLocale |
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* @return string UTF-8 encoded string, original string if iconv failed. |
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* @see https://www.php.net/manual/en/function.setlocale.php |
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* The $lang locale information is maintained per process, not per thread. |
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*/ |
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public static function toUTF8($string, $from, $lang = null) |
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{ |
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if ($from != 'UTF-8') { |
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$locale = null; |
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if ($lang === null) { |
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self::parseEncodingLanguage($from, $lang); |
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} |
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if ($lang !== null) { |
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$locale = setLocale(LC_CTYPE, '0'); |
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setLocale(LC_CTYPE, $lang); |
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} |
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$s = iconv($from, 'UTF-8', $string); //to UTF-8 |
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if ($lang !== null) { |
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setLocale(LC_CTYPE, $locale); |
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} |
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return $s !== false ? $s : $string; //it could return false |
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} |
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return $string; |
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} |
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/** |
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* Convert UTF-8 strings to a different encoding. NB. The result |
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* may not have been encoded if iconv fails. |
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* @param string $string the UTF-8 string for conversion |
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* @param string $to destination encoding |
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* @param ?string $lang Language of the encoding as accepted by PHP setLocale |
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* @return string encoded string. |
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* @see https://www.php.net/manual/en/function.setlocale.php |
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* The $lang locale information is maintained per process, not per thread. |
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*/ |
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public static function fromUTF8($string, $to, $lang = null) |
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{ |
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if ($to != 'UTF-8') { |
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$locale = null; |
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if ($lang === null) { |
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self::parseEncodingLanguage($to, $lang); |
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} |
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if ($lang !== null) { |
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$locale = setLocale(LC_CTYPE, '0'); |
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setLocale(LC_CTYPE, $lang); |
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} |
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$s = iconv('UTF-8', $to, $string); |
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if ($lang !== null) { |
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setLocale(LC_CTYPE, $locale); |
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} |
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return $s !== false ? $s : $string; |
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} |
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return $string; |
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} |
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/** |
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* This parses a Character Set Encoding for an appended/embedded language. |
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* eg "ASCII" can also be "ASCII.de" to designate German ASCII layout. |
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* In this example, at input $encoding is "ASCII.de" and on output $encoding |
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* is 'ASCII' with $lang is "de". |
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* @param string $encoding The character set encoding with optional period and |
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* language appended. |
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* @param ?string &$lang The output language of the encoding. |
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*/ |
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public static function parseEncodingLanguage(string &$encoding, &$lang) |
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{ |
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if(strpos($encoding, '.') !== false) { |
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$parts = explode($encoding, '.', 1); |
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$encoding = $parts[0]; |
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$lang = $parts[1]; |
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} |
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} |
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} |
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pradosoft /
prado
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