/** * Convertstring as json_endcode */ function convert_string_non_latin($var) { require_once JPATH_BASE . DS . 'administrator' . DS . 'components' . DS . 'com_k2' . DS . 'lib' . DS . 'JSON.php'; $json = new Services_JSON(); $strlen_var = strlen($var); $ascii = ''; for ($c = 0; $c < $strlen_var; ++$c) { $ord_var_c = ord($var[$c]); switch (true) { case $ord_var_c == 0x8: $ascii .= '\\b'; break; case $ord_var_c == 0x9: $ascii .= '\\t'; break; case $ord_var_c == 0xa: $ascii .= '\\n'; break; case $ord_var_c == 0xc: $ascii .= '\\f'; break; case $ord_var_c == 0xd: $ascii .= '\\r'; break; case $ord_var_c == 0x22: case $ord_var_c == 0x2f: case $ord_var_c == 0x5c: // double quote, slash, slosh $ascii .= '\\' . $var[$c]; break; case $ord_var_c >= 0x20 && $ord_var_c <= 0x7f: // characters U-00000000 - U-0000007F (same as ASCII) $ascii .= $var[$c]; break; case ($ord_var_c & 0xe0) == 0xc0: // characters U-00000080 - U-000007FF, mask 110XXXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C*', $ord_var_c, ord($var[$c + 1])); $c += 1; $utf16 = $json->utf82utf16($char); $ascii .= sprintf('\\u%04s', bin2hex($utf16)); break; case ($ord_var_c & 0xf0) == 0xe0: // characters U-00000800 - U-0000FFFF, mask 1110XXXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2])); $c += 2; $utf16 = $json->utf82utf16($char); $ascii .= sprintf('\\u%04s', bin2hex($utf16)); break; case ($ord_var_c & 0xf8) == 0xf0: // characters U-00010000 - U-001FFFFF, mask 11110XXX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3])); $c += 3; $utf16 = $json->utf82utf16($char); $ascii .= sprintf('\\u%04s', bin2hex($utf16)); break; case ($ord_var_c & 0xfc) == 0xf8: // characters U-00200000 - U-03FFFFFF, mask 111110XX // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4])); $c += 4; $utf16 = $json->utf82utf16($char); $ascii .= sprintf('\\u%04s', bin2hex($utf16)); break; case ($ord_var_c & 0xfe) == 0xfc: // characters U-04000000 - U-7FFFFFFF, mask 1111110X // see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8 $char = pack('C*', $ord_var_c, ord($var[$c + 1]), ord($var[$c + 2]), ord($var[$c + 3]), ord($var[$c + 4]), ord($var[$c + 5])); $c += 5; $utf16 = $json->utf82utf16($char); $ascii .= sprintf('\\u%04s', bin2hex($utf16)); break; } } return $ascii; }