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   $sqlww="SELECT c_mobile FROM tbl_bd_leads WHERE c_mobile='$emailid1' LIMIT 1";

$check_query1=mysqli_query($conn,$sqlww);

$count_email1=mysqli_num_rows($check_query1);

if($count_email1>0)

{

    

} else{    

         echo     $queryff .= "INSERT INTO tbl_bd_leads(c_name, c_email, c_mobile,company_type,c_full_address,c_city,c_state,requirement,product_name,from_date,incoming_time,bd_id,company_id,source_website,leads_souece_date) VALUES ('".$row144["name"]."', '', '".$row144["mobile"]."','','','".$row144["city"]."','','$reqiure','','$datee1','$incoming_time','5','4','scotbeauty leads','".$row1["DATE_TIME_RE"]."'); ";  // Make Multiple Insert Query 

}

<?php

//$conn=mysqli_connect('localhost','root','','computer');

$servername = "localhost";

$username = "root";

$password = "";

try {

  $conn = new PDO("mysql:host=$servername;dbname=computer", $username, $password);

  // set the PDO error mode to exception

  $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

  echo "Connected successfully";

} catch(PDOException $e) {

  echo "Connection failed: " . $e->getMessage();

}

$runsql=$conn->query("SELECT * FROM class");

$alldata=$runsql->fetchAll(PDO::FETCH_ASSOC);

foreach ($alldata as  $value) {

// code...

$full_name=$value['name'];

$Userid=$value['id'];

$runsqld=$conn->query("SELECT user_id FROM tbl_users WHERE user_id='$Userid'");

 $count = $runsqld->rowCount();

 if($count>0){

 }else{

$sqlinser=$conn->query("INSERT INTO tbl_users(full_name,user_id)VALUES('$full_name','$Userid')");

}

}

?>