<pre>array(3) {
  [0] =&gt; array(3) {
    ["id"] =&gt; int(1)
    ["type"] =&gt; int(1)
    ["content"] =&gt; string(1) "A"
  }
  [1] =&gt; array(3) {
    ["id"] =&gt; int(2)
    ["type"] =&gt; int(2)
    ["content"] =&gt; string(3) "A,B"
  }
  [2] =&gt; array(3) {
    ["id"] =&gt; int(3)
    ["type"] =&gt; int(3)
    ["content"] =&gt; string(12) "我输入的"
  }
}
</pre>[{"id":1,"type":1,"content":"A"},{"id":2,"type":2,"content":"A,B"},{"id":3,"type":3,"content":"\u6211\u8f93\u5165\u7684"}]