insert into в php

посмотрите тут: http://php.net/mysqli_query

mysqli_query($connect, "INSERT INTO table VALUES (...)");

$conn = new mysqli('host','user','password','db');
if(!$conn){
   die(":(");
}
$add = $conn->query("INSERT INTO myTable (field1,field2,field3) VALUES ('val1','val2','val3');");
if($add){
  echo "SUCCESS";
}else{
  echo "ERROR";
}