How does PHP implement click the Add button to add a single line of items and insert all of the content into the database

How does PHP implement click the Add button to add a single line of items and insert all of the content into the database

On Baidu to see this question, think about the answer, the effect such as:

Html+jquery:

exe.php
<?php $arr _time=$_post[' data ' [' time '], $arr _grade=$_post[' data ' [' Grade ']; $arr _type=$_post[' data ' [' type ']; for ($i =0; $i <count ($arr _time); $i + +) {    $insert [$i] [' Time ']= $arr _time[$i];    $insert [$i] [' Grade ']= $arr _grade[$i];    $insert [$i] [' type ']= $arr _type[$i];} echo "<pre>";p Rint_r ($insert); echo "</pre>";/* Each data is a data array (    [0]            = = Array ([TIME] = > November 7, 2014 15:50:18            [Grade] = 1            [Type] = again honoured        )     [1] = = Array        (            [TIME] = November 7, 2014 15:50:24            [grade] + 2            [Type] = excellent student        )     [2] = = Array        (            [TIME] = November 7, 2014 15:50:27            [Grade] = 1            [Type] = again honoured        )) */?>
you should know what to do when you see the results. 

How does PHP implement click the Add button to add a single line of items and insert all of the content into the database