json_decode返回错误代码4解决方法

function jsonEncode($data) {
if (2==func_num_args()) {
$callee=__FUNCTION__;
return json_format_scalar(strval(func_get_arg(1))).":".$callee($data);
}
is_object($data) && $data=get_object_vars($data);
if (is_scalar($data)) { return json_format_scalar($data); }
if (emptyempty($data)) { return '[]';}
$keys=array_keys($data);
if (is_numeric(join('',$keys))) {
$data=array_map(__FUNCTION__,$data);
return '['.join(',',$data).']';
} else {
$data=array_map(__FUNCTION__,array_values($data),$keys);
return '{'.join(',',$data).'}';
}
}
function json_format_scalar($value) {
if (is_bool($value)) {
$value = $value?'true':'false';
} else if (is_int($value)) {
$value = (int)$value;
} else if (is_float($value)) {
$value = (float)$value;
} else if (is_string($value)) {
$value=addcslashes($value,"

"/\");
$value='"'.preg_replace_callback('|[^-]+|','json_utf_slash_callback',$value).'"';
} else {
$value='null';
}
return $value;
}
function json_utf_slash_callback($data) {
if (is_array($data)) {
$chars=str_split(iconv("UTF-8","UCS-2",$data[0]),2);
$chars=array_map(__FUNCTION__,$chars);
return join("",$chars);
} else {
$char1=dechex(ord($data{0}));
$char2=dechex(ord($data{1}));
return sprintf("u%02s%02s",$char1,$char2);
}
}
function json_utf_slash_strip($data) {
if (is_array($data)) {
return $data[1].iconv("UCS-2","UTF-8",chr(hexdec($data[2])).chr(hexdec($data[3])));
} else {
return preg_replace_callback('/(?<!\\)((?:\\\\)*)\\u([a-f0-9]{2})([a-f0-9]{2})/i',__FUNCTION__,$data);
}
}
function jsonDecode($data) {
static $strings,$count=0;
if (is_string($data)) {
$data=trim($data);
if ($data{0}!='{' && $data{0}!='[') return json_utf_slash_strip($data);
$strings=array();
$data=preg_replace_callback('/"([sS]*?(?<!\\)(?:\\\\)*)"/',__FUNCTION__,$data);
//简单的危险性检测
//echo $data;
$cleanData=str_ireplace(array('true','false','undefined','null','{','}','[',']',',',':','#'),'',$data);
if (!is_numeric($cleanData)) {
throw new Exception('Dangerous!The JSONString is dangerous!');
return NULL;
}
$data=str_replace(
array('{','[',']','}',':','null'),
array('array(','array(',')',')','=>','NULL')
,$data);
$data=preg_replace_callback('/#d+/',__FUNCTION__,$data);
//抑制错误,诸如{123###}这样错误的JSON是不能转换成PHP数组的
@$data=eval("return $data;");
$strings=$count=0;
return $data;
} elseif (count($data)>1) {//存储字符串
$strings[]=json_utf_slash_strip(str_replace(array('$','\/'),array('\$','/'),$data[0]));
return '#'.($count++);
} else {//读取存储的值
$index=substr($data[0],1);
return $strings[$index];
}
}