phpjson转数组出错

php json转数组出错求助
1：先输出json

<br>
//组合医生信息JSON<br>
$jsonDoctorInfo  = "{\"mecdoctor\":[";<br>
$jsonDoctorInfo .= "{\"doctorId\":\"".$doctorId."\",\"doctorName\":\"".$strDoctorName."\", \"doctorprice\":\"".$strPrice."\",\"expertise\":\"".$strExpertise."\",\"departments\":\"".$strdepartments."\",\"doctorTitle\":\"".$strTitle."\",\"doctorPhoto\":\"".$strDoctorPhoto."\"}";<br>
$jsonDoctorInfo .= "]}";<br>

2：获取并decode
$jsonGetDoctorInfoData = json_encode($jsonGetDoctorInfoData);
$objGetDoctorInfoData = json_decode($jsonGetDoctorInfoData);
输出：

<br>
{"mecdoctor":[{"doctorId":"","doctorName":"XXXX", "doctorprice":"122","expertise":"XXXXX","departments":"医内科","doctorTitle":"主任医师","doctorPhoto":"hmh"}]}<br>
<br>

3：将json转换成数组

<br>
//解析JSON数据<br>
function _json_decode($json){<br>
$comment = false;<br>
$out = '$x=';<br>
for ($i=0; $i<strlen($json);$i++){<br>
if (!$comment){<br>
if ( ($json[$i] == '{') || ($json[$i] == '[') )<br>
$out .= ' array(';<br>
else if (($json[$i] == '}') || ($json[$i] == ']'))<br>
$out .= ')';<br>
else if ($json[$i] == ':')<br>
$out .= '=>';<br>
else<br>
$out .= $json[$i];          <br>
}else<br>
$out .= $json[$i];<br>
if($json[$i]== '"' && $json[($i-1)]!="\\")<br>
$comment = !$comment;<br>
}<br>
eval($out.";");<br>
<br>
return $x;<br>
}<br>
</strlen($json);$i++){<br>

4：出现问题
Parse error: syntax error, unexpected T_DOUBLE_ARROW in /home/u945504094/public_html/config/config.inc.php(876) : eval()'d code on line 1

分享到：

------解决方案--------------------
没有问题呀

$s = '{"mecdoctor":[{"doctorId":"","doctorName":"XXXX", "doctorprice":"122","expertise":"XXXXX","departments":"医内科","doctorTitle":"主任医师","doctorPhoto":"hmh"}]}';<br>
<br>
print_r(_json_decode($s));<br>
<br>
    function _json_decode($json){<br>
        $comment = false;<br>
        $out = '$x=';<br>
        for ($i=0; $i<strlen($json);$i++){<br>
            if (!$comment){<br>
                if ( ($json[$i] == '{') <br><font color="#FF8000">------解决方案--------------------</font><br> ($json[$i] == '[') )<br>
                    $out .= ' array(';<br>
                else if (($json[$i] == '}') <br><font color="#FF8000">------解决方案--------------------</font><br> ($json[$i] == ']'))<br>
                    $out .= ')';<br>
                else if ($json[$i] == ':')<br>
                    $out .= '=>';<br>
                else<br>
                    $out .= $json[$i];          <br>
            }else<br>
                $out .= $json[$i];<br>
            if($json[$i]== '"' && $json[($i-1)]!="\\")<br>
                $comment = !$comment;<br>
        }<br>
        eval($out.";");<br>
         <br>
        return $x;<br>
    }<br>
</strlen($json);$i++){<br>

Array<br>
(<br>
    [mecdoctor] => Array<br>
        (<br>
            [0] => Array<br>
                (<br>
                    [doctorId] =>