Jump to content

Not Creating table correctly


Farside

Recommended Posts

I am just really trying to get familiar with PHP and MySQl.  I have been able to connect and create a database properly and now when trying to just create a table it won't work.  Here is the coding that i have.  It is the third set of codes, it has two prior sets thats connected to it.

 

<?php
$db_name = "testdb";
$connection = mysql_connect("localhost","jcruz","abc2000") or die(mysql_error());
$db = mysql_select_db($db_name,$connection) or die(mysql_error());
$sql ="CREATE TABLE $_POST[table_name] (";

for ($i = 0; $i < count($_POST[field_name]); $i++) {
$sql .= $_POST[field_name][$i]." ".$_POST[field_type][$i];

if ($_POST[field_length][$i] != "") {
	sql .= " (".$_POST[field_length][$i]."),";
} else {
	$sql .= ",";
}
}

$sql = substr($sql, 0, -1);
$sql .= ")";
$result = mysql_query($sql,$connection) or die(mysql_error());

if ($result) {
$msg = "<P>".$_POST[table_name]." has been created!</P>";
}

?>

<HTML>
<HEAD>
<TITLE>Create a Database Table: Step 3</TITLE>
</HEAD>
<BODY>

<H1>Adding Table to <?php echo "$db_name"; ?>...</H1>

<?php echo "$msg"; ?>

</BODY>
</HTML>

Link to comment
Share on other sites

Instead of....

 

$result = mysql_query($sql,$connection) or die(mysql_error());

 

Use....

 

$result = mysql_query($sql,$connection) or die(mysql_error()."<br />$sql");

 

This should give you an indication of what your query actuyally looks like.

 

ps: Be aware that associative arrays are indexed by strings, hence you need (should) use $_POST['field_name'] instead of $_POST[field_name]. And if your going to place them within double quotes for variable interpolating they need be....

 

"CREATE TABLE {$_POST['table_name']} (";

 

and not....

 

"CREATE TABLE $_POST[table_name] (";

 

I'm not even going to get started on validating form data before you let it anywhere near your queries. I'll simply put it this way.... the code you have is very insecure and could lead to entire databases being deleted quite easily.

Link to comment
Share on other sites

This thread is more than a year old. Please don't revive it unless you have something important to add.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.