How to delete data in php ajax

php ajax method to delete data: first receive GET parameters in the PHP file and delete the data according to the parameters; then use the function "json_encode()" to return the data; then use AJAX to request the file on the front end .

First receive the GET parameters in the PHP file and delete the data according to the parameters;

$id = $_GET['id'];
/*删除数据逻辑*/

Then use the function "json_encode()" to convert the data Return;

header('Content-Type:application/json');
json_decode([
'code' => 1,
'msg' => 'Delete success'
])

Then use AJAX to request the file on the front end;

if (window.XMLHttpRequest)
{
    // IE7+, Firefox, Chrome, Opera, Safari 浏览器执行代码
    xmlhttp=new XMLHttpRequest();
}
else
{
    // IE6, IE5 浏览器执行代码
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
    if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
        alert(xmlhttp.responseText);
    }
}
xmlhttp.open("GET","del_data.php?id="+id,true);
xmlhttp.send();

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