离线和在线服务器处理代码的方式不同

我有一段代码，在我的本地主机和实时服务器上得到不同的处理。

我不知道为什么要改变，也不知道该改变什么。

下面是这段代码:

for($k = 0; $k < count($data['SurveyAnswer']); $k++) {
    if(isset($data['SurveyAnswer'][$k]['answer']['number'])) {
        if($data['SurveyAnswer'][$k]['answer']['number'] != '')
            $data['SurveyAnswer'][$k]['answer'] = $data['SurveyAnswer'][$k]['answer']['number'].','.$data['SurveyAnswer'][$k]['answer']['text'];
        else
            $data['SurveyAnswer'][$k]['answer'] = '';
        } else if(isset($data['SurveyAnswer'][$k]['answer']['yn'])) {
    if($data['SurveyAnswer'][$k]['answer']['yn'] == 'No')
        $data['SurveyAnswer'][$k]['answer'] = 'No,' . $data['SurveyAnswer'][$k]['answer']['text'];
    else
        $data['SurveyAnswer'][$k]['answer'] = 'Yes';
    } else if(isset($data['SurveyAnswer'][$k]['answer']['scale'])) {
        $data['SurveyAnswer'][$k]['answer'] = $data['SurveyAnswer'][$k]['answer']['scale'] . ',' . $data['SurveyAnswer'][$k]['answer']['text'];
    }
}

为方便讨论，下面是数据:

data = array(
    'SurveyAnswer' => array(
        0 => array (
            'answer' => array(
                'number' => '4',
                'text' => 'Test text'
            ),
        1 => array (
            'answer' => array(
                'number' => '',
                'text' => ''
            ),
        2 => array (
            'answer' => array(
                'yn' => 'No',
                'text' => 'Test text'
            ),
        3 => array (
            'answer' => array(
                'yn' => 'Yes',
                'text' => ''
            ),
        4 => array (
            'answer' => array(
                'scale' => 'Good',
                'text' => 'Testing text'
            )
        ),
        5 => array (
            'answer' => '3'
        )
    )
);

这是我的localhost如何改变数据(PHP版本5.4.7在Windows上):

data = array(
    'SurveyAnswer' => array(
        0 => array (
            'answer' => '4,Test text'
            ),
        1 => array (
            'answer' => ''
            ),
        2 => array (
            'answer' => 'No,Test text'
            ),
        3 => array (
            'answer' => 'Yes'
            ),
        4 => array (
            'answer' => 'Good,Testing text'
            )
        ),
        5 => array (
            'answer' => '3'
        )
    )
);

这是我的实时服务器如何改变数据(PHP版本5.3.23在CentOS):

data = array(
    'SurveyAnswer' => array(
        0 => array (
            'answer' => '4,4'
            ),
        1 => array (
            'answer' => ''
            ),
        2 => array (
            'answer' => 'T,T'
            ),
        3 => array (
            'answer' => 'Yes'
            ),
        4 => array (
            'answer' => 'T,T'
            )
        ),
        5 => array (
            'answer' => '3'
        )
    )
);

可能是版本差异导致问题，还是有其他问题。

真实世界的数据，得到这与CakePHP调试之前和CakePHP调试后的代码:

localhost

'app'Controller'SurveyAnswersController.php (line 51) (BEFORE)
array(
    'SurveyAnswer' => array(
        (int) 0 => array(
            'answer' => '1'
        ),
        (int) 1 => array(
            'answer' => '2'
        ),
        (int) 2 => array(
            'answer' => '3'
        ),
        (int) 3 => array(
            'answer' => array(
                'number' => '3',
                'text' => 'asdfasdfasdf'
            )
        )
    )
)
'app'Controller'SurveyAnswersController.php (line 67) (AFTER)
array(
    'SurveyAnswer' => array(
        (int) 0 => array(
            'answer' => '1'
        ),
        (int) 1 => array(
            'answer' => '2'
        ),
        (int) 2 => array(
            'answer' => '3'
        ),
        (int) 3 => array(
            'answer' => '3,asdfasdfasdf'
        )
    )
)

网络服务器

/app/Controller/SurveyAnswersController.php (line 51) (BEFORE)
array(
    'SurveyAnswer' => array(
        (int) 0 => array(
            'answer' => '1'
        ),
        (int) 1 => array(
            'answer' => '2'
        ),
        (int) 2 => array(
            'answer' => '3'
        ),
        (int) 3 => array(
            'answer' => array(
                'number' => '3',
                'text' => 'asdfasdfasdf'
            )
        )
    )
)
app/Controller/SurveyAnswersController.php (line 67) (AFTER)
array(
    'SurveyAnswer' => array(
        (int) 0 => array(
            'answer' => '1,1'
        ),
        (int) 1 => array(
            'answer' => '2,2'
        ),
        (int) 2 => array(
            'answer' => '3,3'
        ),
        (int) 3 => array(
            'answer' => '3,asdfasdfasdf'
        ),
    )
)

我缩短了数据，因为它大约有100个问题。