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<?php /* * This file is part of PHPUnit. * * (c) Sebastian Bergmann <sebastian@phpunit.de> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */
/** * String helpers. */ class PHPUnit_Util_String { /** * Converts a string to UTF-8 encoding. * * @param string $string * * @return string */ public static function convertToUtf8($string) { return mb_convert_encoding($string, 'UTF-8'); }
/** * Checks a string for UTF-8 encoding. * * @param string $string * * @return bool */ protected static function isUtf8($string) { $length = strlen($string);
for ($i = 0; $i < $length; $i++) { if (ord($string[$i]) < 0x80) { $n = 0; } elseif ((ord($string[$i]) & 0xE0) == 0xC0) { $n = 1; } elseif ((ord($string[$i]) & 0xF0) == 0xE0) { $n = 2; } elseif ((ord($string[$i]) & 0xF0) == 0xF0) { $n = 3; } else { return false; }
for ($j = 0; $j < $n; $j++) { if ((++$i == $length) || ((ord($string[$i]) & 0xC0) != 0x80)) { return false; } } }
return true; } }
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