【报Bug】php $json->{'str'}方式访问json数据报错

详细问题描述
[内容]
php 访问json的方式 $json->{'123'} 这种方式是正确的，IDE报错，不允许格式化代码

重现步骤
[步骤]
[结果]
[期望]

运行环境
[系统版本]
[浏览器版本]
[IDE版本]
HBuilder

7.5.1.201610112114

[mui版本]

附件
[代码片段]
if (is_null($json -> {$request['id']})) {
$json -> {$request['id']} = $request['result'];
}

如下是可以通过的
if (is_null(1)) {
$json -> {$request['id']} = $request['result'];
}

日志：
!ENTRY com.aptana.formatter.epl 4 0 2016-11-03 00:55:33.380
!MESSAGE (Build null) [ERROR] com.aptana.formatter.epl/debug Error while formatting the code in your editor.
Please submit a bug report through Studio's support and include the relevant code which triggered this error.
You may also turn on the com.hbuilder.formatter.epl/debug at the Studio's Troubleshooting preference page to log more details about this error.

[安装包]

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