数组的为
array( [title] => 初一上册数学测试题 [id] => 6 [subject] => 14 [parts] => [[单选,100,1]] [topic] => [[1,100]] [json] => [[6,小红做一道数学题“ ';color:rgb(0,0,0);font-weight:bold;font-size:14px;font-family: [#39;'>两个多项式 'font-family:times new roman'>a、b，b为，试求 'font-family:times new roman'>a b的值”。小红误将 'font-family:times new roman'>a b看成a－ ';color:rgb(0,0,0);font-size:14px;font-family: [#39;'>b 'font-family:宋体'>，结果答案（计算正确）为．
'text-indent:21px;line-height:200%'>（ 'font-family:times new roman'>2）求出当x ';color:rgb(0,0,0);font-size:14px;font-family: [#39;'>] => 3时a b的值.
,1,100]] [total] => 100)
我在打印其中的json键时，却没打印全，显示
[[6,