<?php 
//add.php 
include('conn.php'); 
$firstName = cleanup($_POST['firstName']); 
$lastName = cleanup($_POST['lastName']); 
$age = cleanup($_POST['age']); 
 
$sql = "INSERT INTO users (`firstName`, `lastName`, `age`) VALUES ('".$firstName."','".$lastName."','".$age."')"; 
if(mysqli_query($conn, $sql)){ 
    echo 'success'; 
}else{ 
    echo 'error '. mysqli_error($conn); 
} 
 
mysqli_close($conn); 
 
 
?>
 
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