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POTrouble with creating database table using jQuery ajax
 

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  1. POTrouble with creating database table using jQuery ajax
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    <p>I am absolutely new to jQuery and ajax. Currently I am trying to create a table on my local sql server from a javascript file from which I am posting the statement to .php file to execute the statement. </p> <p>.js file:</p> <pre><code>function executeStatement(sqlStatement){ $.ajax({ type: "post", data: sqlStatement, cache: false, url: "api.php", dataType: "text", error: function(xhr, status, error) { var err = eval("(" + xhr.responseText + ")"); alert(err.Message); }, success: function () { alert ("Success!!"); } }); } </code></pre> <p>.php file:</p> <pre><code> require_once('PhpConsole.php'); PhpConsole::start(); debug('HERE!!!'); $sqlStatement = $_POST['sqlStatement']; $host = "*****"; $user = "*****"; $pass = "*****"; $databaseName = "db_user_data"; // Create connection $con = mysqli_connect($host, $user, $pass, $databaseName); // Check connection if (mysqli_connect_errno($con)){ echo "Failed to connect to MySQL: " . mysqli_connect_error(); } else{ $con-&gt;query($sqlStatement); header('Location: success.php'); } </code></pre> <p>I use PHP Console to debug .php files but in this case even the first log 'HERE!!!' is not printed to the console so I am wondering whether it even reaches this .php file. Anyway the event <code>success</code> within executeStatement method is reached and 'Success' printed even though there are no changes in the database.By the way the .php file is also executed on the local server. Does someone has any ideas where the problem can be??</p> <p>Thanks in advance</p>
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    1. USHusky
    1. USHusky
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    1. COwhy send the whole query from javascript. just send the data you need in `json` format. `{username: 'hello', password: 'world'}`, set the `dataType` option in the `ajax` function as `json`, then in `PHP`, decode the `json` and do your PHP query in the PHP file
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      1. USashley
    2. COactually the sqlStatement variable contains something like 'CREATE TABLE bla bla' and it varies depending on the user
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      1. POTrouble with creating database table using jQuery ajax
      1. USHusky
    3. COOh my! I really hope you know what you're doing here. Allowing just ANY SQL statement to be sent to your backend is very insecure. Anyone that is able to access that page is able to delete your database or export sensitive data.
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      1. USthaJeztah
 

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