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546 lines
20 KiB
546 lines
20 KiB
5 years ago
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<?php
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/**********************************
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* Created on: 2007-2-2
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* File Name : lib.json.php
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* Copyright : 2005 Michal Migursk
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* License : http://www.opensource.org/licenses/bsd-license.php
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*********************************/
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class Json
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{
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const SERVICES_JSON_SLICE = 1;
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const SERVICES_JSON_IN_STR = 2;
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const SERVICES_JSON_IN_ARR = 3;
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const SERVICES_JSON_IN_OBJ = 4;
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const SERVICES_JSON_IN_CMT = 5;
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const SERVICES_JSON_LOOSE_TYPE = 16;
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const SERVICES_JSON_SUPPRESS_ERRORS = 32;
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const E_JSONTYPE = 'json decode error';
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/**
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* 将utf16转换为utf8
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*
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* @access private
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* @param string $utf16 utf16字符串
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* @return string
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*/
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private static function utf162utf8($utf16)
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{
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if (function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');
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}
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$bytes = (ord($utf16{0}) << 8) | ord($utf16{1});
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switch (true) {
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case ((0x7F & $bytes) == $bytes):
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return chr(0x7F & $bytes);
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case (0x07FF & $bytes) == $bytes:
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return chr(0xC0 | (($bytes >> 6) & 0x1F))
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. chr(0x80 | ($bytes & 0x3F));
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case (0xFFFF & $bytes) == $bytes:
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return chr(0xE0 | (($bytes >> 12) & 0x0F))
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. chr(0x80 | (($bytes >> 6) & 0x3F))
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. chr(0x80 | ($bytes & 0x3F));
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}
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return '';
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}
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/**
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* 将utf8转换为utf16
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*
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* @access private
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* @param string $utf8 utf8字符串
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* @return string
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*/
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private static function utf82utf16($utf8)
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{
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if (function_exists('mb_convert_encoding')) {
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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');
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}
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switch (strlen($utf8)) {
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case 1:
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return $utf8;
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case 2:
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return chr(0x07 & (ord($utf8{0}) >> 2))
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. chr((0xC0 & (ord($utf8{0}) << 6))
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| (0x3F & ord($utf8{1})));
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case 3:
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return chr((0xF0 & (ord($utf8{0}) << 4))
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| (0x0F & (ord($utf8{1}) >> 2)))
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. chr((0xC0 & (ord($utf8{1}) << 6))
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| (0x7F & ord($utf8{2})));
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}
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return '';
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}
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/**
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* 判断错误
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*
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* @access private
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* @param mixed $data 错误对象
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* @param string $code 错误代码
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* @return boolean
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*/
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private static function _is_error($data, $code = null)
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{
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if (is_object($data) && (get_class($data) == 'services_json_error' ||
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is_subclass_of($data, 'services_json_error'))) {
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return true;
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}
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return false;
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}
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/**
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* 清除特殊格式
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*
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* @access private
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* @param string $str 待处理字符串
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* @return string
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*/
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private static function _reduce_string($str)
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{
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$str = preg_replace(array(
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'#^\s*//(.+)$#m',
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'#^\s*/\*(.+)\*/#Us',
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'#/\*(.+)\*/\s*$#Us'
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), '', $str);
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return trim($str);
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}
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/**
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* 将对象转换为json串
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*
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* @access public
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* @param mixed $var 需要转换的对象
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* @return string
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*/
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public static function _encode($var)
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{
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switch (gettype($var)) {
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case 'boolean':
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return $var ? 'true' : 'false';
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case 'NULL':
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return 'null';
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case 'integer':
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return (int) $var;
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case 'double':
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case 'float':
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return (float) $var;
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case 'string':
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$ascii = '';
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$strlen_var = strlen($var);
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for ($c = 0; $c < $strlen_var; ++$c) {
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$ord_var_c = ord($var{$c});
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switch (true) {
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case $ord_var_c == 0x08:
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$ascii .= '\b';
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break;
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case $ord_var_c == 0x09:
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$ascii .= '\t';
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break;
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case $ord_var_c == 0x0A:
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$ascii .= '\n';
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break;
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case $ord_var_c == 0x0C:
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$ascii .= '\f';
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break;
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case $ord_var_c == 0x0D:
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$ascii .= '\r';
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break;
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case $ord_var_c == 0x22:
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case $ord_var_c == 0x2F:
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case $ord_var_c == 0x5C:
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$ascii .= '\\'.$var{$c};
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break;
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case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):
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$ascii .= $var{$c};
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break;
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case (($ord_var_c & 0xE0) == 0xC0):
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$char = pack('C*', $ord_var_c, ord($var{$c + 1}));
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$c += 1;
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$utf16 = self::utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xF0) == 0xE0):
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$char = pack('C*', $ord_var_c,
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ord($var{$c + 1}),
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ord($var{$c + 2}));
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$c += 2;
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$utf16 = self::utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xF8) == 0xF0):
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$char = pack('C*', $ord_var_c,
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ord($var{$c + 1}),
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ord($var{$c + 2}),
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ord($var{$c + 3}));
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$c += 3;
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$utf16 = self::utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xFC) == 0xF8):
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$char = pack('C*', $ord_var_c,
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ord($var{$c + 1}),
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ord($var{$c + 2}),
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ord($var{$c + 3}),
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ord($var{$c + 4}));
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$c += 4;
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$utf16 = self::utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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case (($ord_var_c & 0xFE) == 0xFC):
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$char = pack('C*', $ord_var_c,
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ord($var{$c + 1}),
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ord($var{$c + 2}),
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ord($var{$c + 3}),
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ord($var{$c + 4}),
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ord($var{$c + 5}));
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$c += 5;
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$utf16 = self::utf82utf16($char);
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$ascii .= sprintf('\u%04s', bin2hex($utf16));
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break;
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}
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}
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return '"'.$ascii.'"';
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case 'array':
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if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {
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$properties = array_map(array('Json', '_name_value'),
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array_keys($var),
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array_values($var));
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foreach ($properties as $property) {
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if (self::_is_error($property)) {
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return $property;
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}
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}
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return '{' . join(',', $properties) . '}';
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}
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// treat it like a regular array
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$elements = array_map(array('Json', '_encode'), $var);
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foreach ($elements as $element) {
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if (self::_is_error($element)) {
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return $element;
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}
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}
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return '[' . join(',', $elements) . ']';
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case 'object':
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$vars = get_object_vars($var);
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$properties = array_map(array('Json', '_name_value'),
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array_keys($vars),
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array_values($vars));
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foreach ($properties as $property) {
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if (self::_is_error($property)) {
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return $property;
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}
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}
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return '{' . join(',', $properties) . '}';
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default:
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return false;
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}
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}
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/**
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* 解码json字符串
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*
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* @access public
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* @param string $str 解码字符串
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* @return mixed
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*/
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public static function _decode($str)
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{
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$str = self::_reduce_string($str);
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switch (strtolower($str)) {
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case 'true':
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return true;
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case 'false':
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return false;
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case 'null':
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return null;
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default:
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$m = array();
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if (is_numeric($str)) {
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return ((float)$str == (integer)$str)
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? (integer)$str
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: (float)$str;
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} elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {
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$delim = substr($str, 0, 1);
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$chrs = substr($str, 1, -1);
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$utf8 = '';
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$strlen_chrs = strlen($chrs);
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for ($c = 0; $c < $strlen_chrs; ++$c) {
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$substr_chrs_c_2 = substr($chrs, $c, 2);
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$ord_chrs_c = ord($chrs{$c});
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switch (true) {
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case $substr_chrs_c_2 == '\b':
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$utf8 .= chr(0x08);
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++$c;
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break;
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case $substr_chrs_c_2 == '\t':
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$utf8 .= chr(0x09);
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++$c;
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break;
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case $substr_chrs_c_2 == '\n':
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$utf8 .= chr(0x0A);
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++$c;
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break;
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case $substr_chrs_c_2 == '\f':
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$utf8 .= chr(0x0C);
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++$c;
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break;
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case $substr_chrs_c_2 == '\r':
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$utf8 .= chr(0x0D);
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++$c;
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break;
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case $substr_chrs_c_2 == '\\"':
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case $substr_chrs_c_2 == '\\\'':
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case $substr_chrs_c_2 == '\\\\':
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case $substr_chrs_c_2 == '\\/':
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if (($delim == '"' && $substr_chrs_c_2 != '\\\'') ||
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($delim == "'" && $substr_chrs_c_2 != '\\"')) {
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$utf8 .= $chrs{++$c};
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}
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break;
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case preg_match('/\\\u[0-9A-F]{4}/i', substr($chrs, $c, 6)):
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$utf16 = chr(hexdec(substr($chrs, ($c + 2), 2)))
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. chr(hexdec(substr($chrs, ($c + 4), 2)));
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$utf8 .= self::utf162utf8($utf16);
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$c += 5;
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break;
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case ($ord_chrs_c >= 0x20) && ($ord_chrs_c <= 0x7F):
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$utf8 .= $chrs{$c};
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break;
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case ($ord_chrs_c & 0xE0) == 0xC0:
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$utf8 .= substr($chrs, $c, 2);
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++$c;
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break;
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case ($ord_chrs_c & 0xF0) == 0xE0:
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$utf8 .= substr($chrs, $c, 3);
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$c += 2;
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break;
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case ($ord_chrs_c & 0xF8) == 0xF0:
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$utf8 .= substr($chrs, $c, 4);
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$c += 3;
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break;
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case ($ord_chrs_c & 0xFC) == 0xF8:
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$utf8 .= substr($chrs, $c, 5);
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$c += 4;
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break;
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case ($ord_chrs_c & 0xFE) == 0xFC:
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$utf8 .= substr($chrs, $c, 6);
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$c += 5;
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break;
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}
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}
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return $utf8;
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} elseif (preg_match('/^\[.*\]$/s', $str) || preg_match('/^\{.*\}$/s', $str)) {
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if ($str {0} == '[') {
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$stk = array(self::SERVICES_JSON_IN_ARR);
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$arr = array();
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} else {
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$stk = array(self::SERVICES_JSON_IN_OBJ);
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$obj = new stdClass();
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}
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array_push($stk, array('what' => self::SERVICES_JSON_SLICE,
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'where' => 0,
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'delim' => false));
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$chrs = substr($str, 1, -1);
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$chrs = self::_reduce_string($chrs);
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if ($chrs == '') {
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if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
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return $arr;
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} else {
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return $obj;
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}
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}
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$strlen_chrs = strlen($chrs);
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for ($c = 0; $c <= $strlen_chrs; ++$c) {
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$top = end($stk);
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$substr_chrs_c_2 = substr($chrs, $c, 2);
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if (($c == $strlen_chrs) || (($chrs {$c} == ',') && ($top['what'] == self::SERVICES_JSON_SLICE))) {
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$slice = substr($chrs, $top['where'], ($c - $top['where']));
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array_push($stk, array('what' => self::SERVICES_JSON_SLICE, 'where' => ($c + 1), 'delim' => false));
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if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
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array_push($arr, self::_decode($slice));
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} elseif (reset($stk) == self::SERVICES_JSON_IN_OBJ) {
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$parts = array();
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if (preg_match('/^\s*(["\'].*[^\\\]["\'])\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
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$key = self::_decode($parts[1]);
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$val = self::_decode($parts[2]);
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$obj->$key = $val;
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} elseif (preg_match('/^\s*(\w+)\s*:\s*(\S.*),?$/Uis', $slice, $parts)) {
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$key = $parts[1];
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$val = self::_decode($parts[2]);
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$obj->$key = $val;
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}
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}
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} elseif ((($chrs {$c} == '"') || ($chrs{$c} == "'")) && ($top['what'] != self::SERVICES_JSON_IN_STR)) {
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||
|
array_push($stk, array('what' => self::SERVICES_JSON_IN_STR, 'where' => $c, 'delim' => $chrs{$c}));
|
||
|
|
||
|
} elseif (($chrs {$c} == $top['delim']) &&
|
||
|
($top['what'] == self::SERVICES_JSON_IN_STR) &&
|
||
|
((strlen(substr($chrs, 0, $c)) - strlen(rtrim(substr($chrs, 0, $c), '\\'))) % 2 != 1)) {
|
||
|
array_pop($stk);
|
||
|
|
||
|
} elseif (($chrs {$c} == '[') &&
|
||
|
in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
|
||
|
array_push($stk, array('what' => self::SERVICES_JSON_IN_ARR, 'where' => $c, 'delim' => false));
|
||
|
} elseif (($chrs {$c} == ']') && ($top['what'] == self::SERVICES_JSON_IN_ARR)) {
|
||
|
array_pop($stk);
|
||
|
} elseif (($chrs {$c} == '{') &&
|
||
|
in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
|
||
|
array_push($stk, array('what' => self::SERVICES_JSON_IN_OBJ, 'where' => $c, 'delim' => false));
|
||
|
} elseif (($chrs {$c} == '}') && ($top['what'] == self::SERVICES_JSON_IN_OBJ)) {
|
||
|
array_pop($stk);
|
||
|
} elseif (($substr_chrs_c_2 == '/*') &&
|
||
|
in_array($top['what'], array(self::SERVICES_JSON_SLICE, self::SERVICES_JSON_IN_ARR, self::SERVICES_JSON_IN_OBJ))) {
|
||
|
array_push($stk, array('what' => self::SERVICES_JSON_IN_CMT, 'where' => $c, 'delim' => false));
|
||
|
$c++;
|
||
|
} elseif (($substr_chrs_c_2 == '*/') && ($top['what'] == self::SERVICES_JSON_IN_CMT)) {
|
||
|
array_pop($stk);
|
||
|
$c++;
|
||
|
for ($i = $top['where']; $i <= $c; ++$i)
|
||
|
$chrs = substr_replace($chrs, ' ', $i, 1);
|
||
|
}
|
||
|
|
||
|
}
|
||
|
|
||
|
if (reset($stk) == self::SERVICES_JSON_IN_ARR) {
|
||
|
return $arr;
|
||
|
|
||
|
} elseif (reset($stk) == self::SERVICES_JSON_IN_OBJ) {
|
||
|
return $obj;
|
||
|
|
||
|
}
|
||
|
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* 对配对值编码
|
||
|
*
|
||
|
* @access public
|
||
|
* @param string $name 名称
|
||
|
* @param mixed $value 值
|
||
|
* @return string
|
||
|
*/
|
||
|
public static function _name_value($name, $value)
|
||
|
{
|
||
|
$encoded_value = self::_encode($value);
|
||
|
|
||
|
if (self::_is_error($encoded_value)) {
|
||
|
return $encoded_value;
|
||
|
}
|
||
|
|
||
|
return self::_encode(strval($name)) . ':' . $encoded_value;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* 对变量进行json编码
|
||
|
*
|
||
|
* @access public
|
||
|
* @param mixed $var 需要处理的对象
|
||
|
* @return string
|
||
|
*/
|
||
|
public static function encode($var)
|
||
|
{
|
||
|
if (function_exists('json_encode')) {
|
||
|
/** from php 5.1 */
|
||
|
return json_encode($var);
|
||
|
} else {
|
||
|
return self::_encode($var);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* 对字符串进行json解码
|
||
|
*
|
||
|
* @access public
|
||
|
* @param string $var 需要解码的字符串
|
||
|
* @param boolean $assoc 是否强制解释为数组
|
||
|
* @return mixed
|
||
|
*/
|
||
|
public static function decode($var, $assoc = false)
|
||
|
{
|
||
|
if (function_exists('json_decode')) {
|
||
|
/** from php 5.1 */
|
||
|
return json_decode($var, $assoc);
|
||
|
} else {
|
||
|
$result = self::_decode($var);
|
||
|
}
|
||
|
|
||
|
if ($assoc && is_object($result)) {
|
||
|
return (array) $result;
|
||
|
} else if (!$assoc && is_array($result)) {
|
||
|
return (object) $result;
|
||
|
}
|
||
|
|
||
|
return $result;
|
||
|
}
|
||
|
}
|
||
|
|