get id before post

[odysea]

is there any way to get the id you are going to insert the data in before you post the data, like get the last id and do a +1 to it or something pleaseee?

[pritaeas]

select max(id) from table will give you the max id used.

Be careful, you can't rely on this being the id that will actually be used.

[somedude3488]

First of all, why?

I would just insert the data, then use mysql_insert_id() to get the id.

But if you really need to get it before, here is a function:

function getNextID() {
  $query = mysql_query("SELECT `id` FROM `table_name` ORDER BY `id` DESC LIMIT 1") or die(mysql_error());
  if ( mysql_num_rows( $query ) == 1 ) {
    list( $id ) = mysql_fetch_row( $query );
    return (int) $id + 1;
  }
  return false;
}

or use pritaeas solution.

[odysea]

First of all, why?

I would just insert the data, then use mysql_insert_id() to get the id.

But if you really need to get it before, here is a function:

function getNextID() {
  $query = mysql_query("SELECT `id` FROM `table_name` ORDER BY `id` DESC LIMIT 1") or die(mysql_error());
  if ( mysql_num_rows( $query ) == 1 ) {
    list( $id ) = mysql_fetch_row( $query );
    return (int) $id + 1;
  }
  return false;
}

or use pritaeas solution.

hi mate first of all thanks for your reply.

i am going to explain my self better so maybe you can understand the issue more as i got you confused i think. so

i have the following code

<?php 

include_once 'core/modules/FCKeditor/fckeditor.php';

include 'includes/php/authentication.php';
include 'includes/php/timeout.php';
include 'templates/default.php';

if(isset($_POST['save']))
{
	$name = $_POST['name'];
	$title = $_POST['title'];
	$description = $_POST['description'];
	$keywords = $_POST['keywords'];
	$content = $_POST['content'];
    $updated = date("D, jS F, Y");
	
	if(!get_magic_quotes_gpc())
	{
		$name = addslashes($name);
		$title = addslashes($title);
		$description = addslashes($description);
		$keywords = addslashes($keywords);
		$content = addslashes($content);
	}
	
	include 'core/config.php';
	include 'core/opendb.php';

	mysql_query("INSERT INTO pages 
	(name, title, description, keywords, content, updated) VALUES('$name', '$title', '$description', '$keywords', '$content', '$updated' ) ") 
	or die(mysql_error());
	

	
	// Start Create php page file
	
	$filename = "$name.php";
	$filehandle = fopen($filename, 'w') or die("can't open file");

	fwrite($filehandle, $template);

	fclose($filehandle);
	
	// End Create php page file
	
	include 'core/closedb.php';

	header("location:default.php?s=listpages");
	}
?>

this code posts data to the db and at the end creats a .php page with provided data from the form.

$template is the content that is going to be on the actual .php page created.

here is $template

<?
$template = <<<TEMPLATE
<?php
include '../core/config.php';
include '../core/opendb.php';

$queryo = "SELECT id, name, title, description, keywords, content ". "WHERE id = 'i want the id for here'";
$resulto = mysql_query($queryo) or die('Error : ' . mysql_error());
list($id, $name, $title, $description, $keywords, $content) = mysql_fetch_array($resulto, MYSQL_NUM);

include '../core/closedb.php';
?>
TEMPLATE;
?>

as you can see i want the id before i post so i can echo/get it or something in the template where i have "WHERE ID ="". like this the .php page will get me the data :) hope i made my self more understandable this time hehe