js调用php文件的方法是什么

<div id="side-tab3">
 <h2>批量获取数据</h2>
 <p>根据cid 获取所有商品名称</p>
 <form action="admin.php#side-tab3" id="form_get_all_name" method="post">
 <input type="text" id="cid_all_name" name="cid_all_name">
 <button class="btn btn-success cid_all_name">获取</button>
 </form>
 <div>
 <?php echo $cid_data ?>
 </div>
 </div>

function getCidAllNamme($con, $name)
{
 $sql = "select `name` from `la_goods` where `cid`='{$name}'";
 if (!$obj = mysqli_query($con, $sql)) {
 die(mysqli_error($con) . $sql);
 }
 $nameList = array();
 while ($res = mysqli_fetch_assoc($obj)) {
 $nameList[] = $res;
 }
 $cid_data = '';
 if (count($nameList) > 0) {
 $cid_data .= "['";
 //python 中数组的表示方法 ['','']
 foreach ($nameList as $item) {
 $cid_data .= "'".$item['name']."'";
 }
 $cid_data .= "']";
 }
 return $cid_data;
}
 
$cid_all_name = $_POST['cid_all_name'];
if (!empty($cid_all_name)) {
 $cid_data = getCidAllNamme($con, $cid_all_name);
}