JSON在方括号外丢失

Question

我需要在数组中包含JSON对象，如：

[{"term":"hemisected","description":"Cut into two equal parts; to bisect, especially along a medial longitudinal plane."},{"term":"polyuria","description":"A condition usually defined as excessive or abnormally large production or passage of urine."},{"term":"dyspnoea","description":"Shortness of breath."}]

但是，下面是将JSON输出为单独的对象：

while ($row = mysql_fetch_array($result)) { 
        $data = array(
        'term' => $row['term'],
        'description' => $row['definition']
        );
echo json_encode($data);
}

比如：

{"term":"hemisected","description":"Cut into two equal parts; to bisect, especially along a medial longitudinal plane."}{"term":"polyuria","description":"A condition usually defined as excessive or abnormally large production or passage of urine."}{"term":"dyspnoea","description":"Shortness of breath."} 

Answer 1

目前，json结构没有很好地构建，因为它在循环期间被调用。必须在构建数组(在本例中为$data)之后调用它。考虑一下这个例子：

$data = array();
while ($row = mysql_fetch_array($result)) { 
    $data[] = array(
        'term' => $row['term'],
        'description' => $row['definition'],
    );
}

echo json_encode($data);