创建数据库表单的解析/语法错误[重复]

i am receiving a Parse error: syntax error, unexpected '[' in (line).. anyone got a solution? please see below php format...I am using php version 4.6.3

<?php
    session_start();

        $db =mysqli_connect("localhost","username","password","database");
    include_once('db.php');
    if(isset($_POST['name_First'])&& isset($_POST['name_Last'])&& isset($_POST['name_Email'])&& isset($_POST['name_Phone'])) {
            if ($_POST['name_First']!="" && $_POST['name_Last']!="" && $_POST['name_Email']!="" && _POST['name_Phone']!=""){
                $first = $_POST['name_First'];
                $last = $_POST['name_Last'];
                $sql_store = "INSERT into coobacha (First,Last,Email,Phone) VARIABLES($First,$Last,NULL, NULL)";
                $sql = mysqli_query;{$db_store} or die(mysqli_error)();
    } else{
    echo "You need to fill out all fields...";
    } else{
        echo "You need to fill out all fields...";
        }

?>

</div>

Replace VARIABLES to VALUES, try this:

$sql_store = "INSERT into coobacha (First,Last,Email,Phone) VALUES('$first','$last',NULL, NULL)";

And check the mysql syntax INSERT more carefully.

You use that

$sql_store = "INSERT into coobacha (First,Last,Email,Phone) VALUES('$First','$Last','', '')";