Absolute Path (ABSPATH) in WordPress is not working

Question

I am currently working on a small task that store a plugin information into database, but I have problem regarding to include the file that has the functions to run the query.

Here is the line that includes the file:

require_once(ABSPATH . 'wp-admin/includes/upgrade.php');

but I got the following when I run the code:

Warning: require_once(ABSPATHwp-admin/includes/upgrade.php): failed to open stream: No such file or directory in /home/najam/dev/project1/wordpress/wp-admin/admin-insert.php on line 18

I searched a lot but can't find anything useful or helpful.

EDIT

Here is my code:

global $wpdb;

$table_name = $wpdb->prefix . 'table_form';

$sql = "CREATE TABLE $table_name (
  id int(11) NOT NULL AUTO_INCREMENT,
  rows int(11) DEFAULT NULL,
  cols int(11) DEFAULT NULL,
  UNIQUE KEY id (id)
);";

require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
dbDelta( $sql );`

Answer 1

insert.php file that I made myself, actually I am new to wordpress, I want to that is there any mistake that i am making? Actually I want to store a plugin form information in the database.

Your question is very light on detail but I suspect that the mistake you are making is loading a file in such a way as it loads outside the context of WordPress, or in such a way that only parts of WordPress get loaded.

The lack of detail in your question-- the near complete lack of context for the code-- makes it impossible to provide a solid answer but I am leaning toward suggesting that you need to run your code via the AJAX API (even if not strictly AJAX). Something like this: https://wordpress.stackexchange.com/a/108145/21376

If you want a better answer, you must write a better question. Please click the "edit" button under your question and add as much detail as you can, but keep it organized.

Answer 2

there is a nice WordPress function that helps you anytime you don't want to check for missing "/" on your path.

trailingslashit

your example should be the recommended way written:

require_once( trailingslashit( ABSPATH ) . 'wp-admin/includes/upgrade.php' );

using this function, you never have to put "/" in front of your "relative" path, as this function makes sure that "/" will be in case is missing.

this is why we have created that function in WordPress.

Answer 3

ABSPATH will work you need to include wp-load file. include '../../../wp-load.php';

Answer 4

You should not need the / but try a slash at the start of the /wp-admin

require_once( ABSPATH . '/wp-admin/includes/upgrade.php' );

But did you check if /wp-admin/admin-insert.php file exists?

Is the ABSPATH defined? Add the following to check:

// Is ABSPATH defined?
if ( !defined('ABSPATH') )
die('-1');

Also, are you trying to run this without loading WP? Plus, you could try site_url() and work with it.

Answer 5

ABSPATH should contain a trailing slash already. You need to include your upgrade file from the main plugin's file. Maybe you need to hook into 'plugins_loaded' action or 'init' and then call the upgrade method.