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<?php /** * @package utf8 */ //--------------------------------------------------------------- /** * UTF-8 aware alternative to ord * Returns the unicode ordinal for a character * * Joomla modification - As of PHP 7.4, curly brace access has been deprecated. As a result this function has been * modified to use square brace syntax * See https://github.com/php/php-src/commit/d574df63dc375f5fc9202ce5afde23f866b6450a * for additional references * * @param string UTF-8 encoded character * @return int unicode ordinal for the character * @see http://www.php.net/ord * @see http://www.php.net/manual/en/function.ord.php#46267 */ function utf8_ord($chr) { $ord0 = ord($chr); if ($ord0 >= 0 && $ord0 <= 127) { return $ord0; } if (!isset($chr[1])) { trigger_error('Short sequence - at least 2 bytes expected, only 1 seen'); return false; } $ord1 = ord($chr[1]); if ($ord0 >= 192 && $ord0 <= 223) { return ($ord0 - 192) * 64 + ($ord1 - 128); } if (!isset($chr[2])) { trigger_error('Short sequence - at least 3 bytes expected, only 2 seen'); return false; } $ord2 = ord($chr[2]); if ($ord0 >= 224 && $ord0 <= 239) { return ($ord0 - 224) * 4096 + ($ord1 - 128) * 64 + ($ord2 - 128); } if (!isset($chr[3])) { trigger_error('Short sequence - at least 4 bytes expected, only 3 seen'); return false; } $ord3 = ord($chr[3]); if ($ord0 >= 240 && $ord0 <= 247) { return ($ord0 - 240) * 262144 + ($ord1 - 128) * 4096 + ($ord2 - 128) * 64 + ($ord3 - 128); } if (!isset($chr[4])) { trigger_error('Short sequence - at least 5 bytes expected, only 4 seen'); return false; } $ord4 = ord($chr[4]); if ($ord0 >= 248 && $ord0 <= 251) { return ($ord0 - 248) * 16777216 + ($ord1 - 128) * 262144 + ($ord2 - 128) * 4096 + ($ord3 - 128) * 64 + ($ord4 - 128); } if (!isset($chr[5])) { trigger_error('Short sequence - at least 6 bytes expected, only 5 seen'); return false; } if ($ord0 >= 252 && $ord0 <= 253) { return ($ord0 - 252) * 1073741824 + ($ord1 - 128) * 16777216 + ($ord2 - 128) * 262144 + ($ord3 - 128) * 4096 + ($ord4 - 128) * 64 + (ord($chr[5]) - 128); } if ($ord0 >= 254 && $ord0 <= 255) { trigger_error('Invalid UTF-8 with surrogate ordinal ' . $ord0); return false; } }
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