How can I insert single data using implode and explode - php

Question

I want to insert single data into SQL. I have instert table and first and lastname I will post data to service.php using implode and in service I will exlope data and add into a database. But it doesn't work.
Here is my inser.php page
if($_POST)
{
$first_name = ($_POST['first_name']);
$last_name = ($_POST['last_name']);
$query=$first_name.'|'.$last_name;
$params=array(
'action' => "INSERTSINGLE",
'query' => $query
);
$postData='';
foreach($params as $k => $v){
$postData .= $k . '='.$v.'&';
}
rtrim($postData, '&');
if(is_array($postData)){
$count=count($postData);
}else{
$count=0;
}
print_r($postData);
$ch=curl_init();
curl_setopt($ch, CURLOPT_URL,"service.php");
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_HEADER,false);
curl_setopt($ch, CURLOPT_POST,$count);
curl_setopt($ch, CURLOPT_POSTFIELDS,$postData);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type:
application/json'));
$responsedata=curl_exec($ch);
curl_close($ch);
print_r($responsedata);
}
and here is my webservice page
require_once('index.php');
$action=$_POST["action"];
echo $action;
$query = $_POST["query"];
$gelendata=explode('|',$query);
$firstname=$gelendata[0];
$lastname=$gelendata[1];
switch ($action)
{
case 'GETCLIENTS':
echo $firstname;
$query = $myPDO->query("SELECT * FROM users",PDO::FETCH_ASSOC);
foreach ($query as $row) {
echo $row['first_name']."-".$row['last_name']."<br />\n";
}
break;
case 'GETCLIENT':
echo 'client çekildi.';
$query = $myPDO->query("SELECT * FROM users WHERE user_id='{$query}'")->fetch(PDO::FETCH_ASSOC);
print_r($query);
break;
case 'INSERTSINGLE':
echo 'client çekildi.';
$query = $myPDO->query("INSERT INTO users (firs_name,last_name) VALUES({$firstname},{$lastname})")->fetch(PDO::FETCH_ASSOC);
print_r($query);
break;
I can take the data but I can not insert. Can you please forward me? Thanks...

Answer 1

case 'INSERTSINGLE':
echo 'client çekildi.';
$query = $myPDO->query("INSERT INTO users (firs_name,last_name) VALUES('{$firstname}','{$lastname}')")->fetch(PDO::FETCH_ASSOC);
print_r($query);
break;