_mysql_syain2.php

<form method="post">
<textarea name="query"><?= $_POST["query"] ?></textarea>
<input type="submit" name="send" value="送信">
</form>
 
<?php
require_once("db_connect.php");
 
if ( $_POST["query"] != "" ) {
 
 
    // SQL の実行
    $result = $mysqli->query( $_POST["query"] );
 
    print "<pre>";
 
    // MYSQLI_BOTH
    while ( $row = $result->fetch_array( MYSQLI_BOTH ) ) {
 
        print "{$row[0]} {$row[1]}\n";
 
    }
    print "</pre>";
 
}
 
// ***************************
// 接続解除
// ***************************
$mysqli->close();
 
?>