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We have our own php system, now we want to have a blog function. Because wordpress are widely used, so we decided to use it. And now I want to invoke wordpress's function , for example wp_insert_user , how can I can do that ?

Suppose my system is A and installed on /var/www/A, and wordpress is WP and installed on /var/www/WP. I can put them together like this /var/www/A/WP, but I don't think that's a good idea.

If we use /var/www/A and /var/www/WP, how can I invoke wordpress's function from a php file that in project A? Using curl?


Now I put WP below A (/var/www/A/wordpress)

Here, in my project A , I have a logon.php, what I want to do is invoke 'wp_insert_user' function to create a new wordpress user when user logon our system (just a test purpose).

I put the following code at the beginning of my logon.php

define('WP_USE_THEMES', false);

Before I add the two line, when I visit my site, the url is :


After I add it, the url become this:


what worse, all the style of my logon.php are completely gone.

My requirement is simple:

when user logon our system, invoke wordpress function 'wp_insert_user' 
to create a user for wordpress. Just to create a new user, no more action.
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2 Answers

up vote 3 down vote accepted

You can add the following snippet at the start of your PHP file to load WordPress in it.

define( 'WP_USE_THEMES', false );
require('wp-blog-header.php'); // chage the path to match your WP directory
//the rest of your code here

EDIT: Alternatively, you could use wp-load.php instead of wp-blog-header.php.

define( 'WP_USE_THEMES', false );
require('wp-load.php'); // chage the path to match your WP directory
//the rest of your code here

This answer explains that:

It loads all of WordPress, but doesn't call wp() or invoke the template loader (used by themes). Method 2 will be a little lighter-weight, but should give you the same functionality.

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I update my question, pls help me. –  diligent Jun 17 at 7:23
Looks like you didn't install WordPress... Install it first. –  RRikesh Jun 17 at 7:40
Oh, maybe, I install it before, so I just copy the installed file to /var/www/A. I reinstall it. Thanks –  diligent Jun 17 at 7:59
After I install it, still got the problem. –  diligent Jun 17 at 8:18
try to access it directly to confirm –  RRikesh Jun 17 at 9:13
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Like RRikesh said, including wp-blog-header.php will work but it also has lines of code that includes theme templates. You can take it one step further and just include wp-load.php so you have the bare bones, no extra frills or extra stuff to load.

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The theme templates won't load if you're using define( 'WP_USE_THEMES', false );. This answer talks about the difference. Effectively, including wp-load should be lighter. –  RRikesh Jun 17 at 5:28
Thanks imHavoc, thanks –  diligent Jun 17 at 5:36
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