HTML & PHPMySQL , Insert many datas into Table fro

Hi I'm trying to insert datas from one textbox (Text Area) but datas should be terminated by lines FIELDS TERMINATED BY '\n'

My HTML is

    <form method="get" id="testformid" action="upload-datas.php">
    <input type="submit" />
</form> 
<textarea form ="testformid" name="taname" id="taid" cols="35" wrap="soft"></textarea>

Now if I write in this textare datas like

1
22
333

How can I make my upload-datas.php to terminate datas which it gets from the form on top? P.s this is something like CVS file but I like to make it inserting data from textarea!

A couple changes that should suffice:

As RiggsFolly mentioned, the textarea should be moved into the form
I would make the form submit method POST instead of GET. That way the data won't be appended to the URL (i.e. in the query string).

<form method="post" id="testformid">
Delimit the new line character (i.e. \n) using double quotes: e.g. $lines = explode("\n",$_POST['taname']);
Use mysqli functions (e.g. mysqli_connect(), mysqli_prepare(), mysqli_bind_param() and mysqli_execute()) or PDO functions to insert the data into the database

Edit:

The call to mysqli_bind_param() must be called with all parameters at once, instead of once per parameter. In order to do this with a varying number of parameters, we must use a technique like the one described in this article.

    <?php
    $lines = array();
    $output = '';
    if(array_key_exists('taname',$_POST) && $_POST['taname']) {
        $lines = explode("\n",$_POST['taname']);

        //define $host, $username, $pw, $databaseName before this
        //$host = 'localhost';...etc...
        $connection = mysqli_connect($host,$username, $pw, $databaseName);
        if ($connection) {
            $paramHolders = array_map(function() { return '?';},$lines);

            //update tablename, column name accordingly 
            $insertQuery = 'INSERT INTO tableName (columnName) VALUES ('.implode('), (',$paramHolders).')';
            $statement = mysqli_prepare($connection,$insertQuery);
            //this will be used as the first param to mysql_stmt_bind_param
            // e.g. 'ssss' - one 's' for each line
            $types = str_repeat('s',count($lines));
            $params = array($statement,&$types);
            //add each line by-reference to the list of parameters
            foreach($lines as $index=>$line) {
                $output .= '<div>inserted line: '.$line.'</div>';
                $params[] = &$lines[$index];
            }
            //call mysql_bind_param() with the varying number of arguments
            call_user_func_array('mysqli_stmt_bind_param',$params);
            $statement->execute();
        }
    }
    ?>
    <html>
        <body>
            <form method="post" id="testformid">
                <textarea name="taname" id="taid" cols="35" wrap="soft"></textarea>
                <input type="submit"/>
            </form>
            <? echo $output; ?>
        </body>
    </html>