Fetch data (messages) in every second with ajax (setinterval) from mysql (PHP) in wordpress.

In main file

<script>

jQuery(document).ready(function($){



var own_id = $(“#own_id”).val();
var user_id = $(“#user_id”).val();
alert(‘helo’);


function sandeep(){

var data = {
‘action’:’fetch_message’,
‘own_id’:own_id,
‘user_id’:user_id,
}


$.post(myajax.ajaxurl,data,function(response){
//$(“#response”).html(response);
$(“#jassi”).html(response);
console.log(response);
});


}

setInterval(function(){ sandeep(); }, 500);
});

</script>

<div id=”jassi”>



</div>

In Funtion.php file 

function fetch_message(){
$msg_content = $_POST[‘msg_content’];
$own_id = $_POST[‘own_id’];
$user_id = $_POST[‘user_id’];
echo $user_id;
global $wpdb;
$table_name13 = $wpdb->prefix . “user_chats”;
$results = $wpdb->get_results(“select * from $table_name13 where sender_id =’$own_id’ AND receiver_id=’$user_id'”);
$total = count($results);

foreach($results as $result){
echo $result->msg_content.”<br>”;




}
die();
}

add_action(‘wp_ajax_nopriv_fetch_message’,’fetch_message’);
add_action(‘wp_ajax_fetch_message’,’fetch_message’);