Questions tagged [php]
For questions about the server-side programming language that the WordPress core, plugins and themes are written in. Questions about using PHP outside a WordPress context are off-topic but might be asked on Stack Overflow.
10,410
questions
127
votes
14
answers
547k
views
How to get URL of current page displayed?
I want to add custom PHP code to ensure that whenever a page on my site loads in my browser, the URL of that page is echoed to the screen. I can use echo get_permalink(), but that does not work on ...
- 1,827
94
votes
11
answers
122k
views
What are PHP extensions and libraries WP needs and/or uses?
Codex loosely only mentions PHP version in server requirements, however PHP can be configured in pretty wide range of excluding/including different parts.
What are extensions/libraries that:
are ...
- 99.2k
71
votes
7
answers
108k
views
What is the correct way to use WordPress functions outside WordPress files?
I read about 2 methods for initializing WordPress function outside of WordPress files so We can use these functions on any page or website outside the WordPress blog.
Which one of these 2 methods is ...
- 1,201
66
votes
3
answers
132k
views
Allow HTML in excerpt
Here is my excerpt code.
// Generate custom excerpt length
function wpbx_excerpt_length($length) {
return 300;
}
add_filter('excerpt_length', 'wpbx_excerpt_length');
How do I allow html like <...
- 835
64
votes
8
answers
85k
views
How to get WordPress Time Zone setting?
Can someone tell me how to get the time zone that is set in the WordPress Admin?
For example, if the blog is set to Eastern time, I need this exact string to print out:
US/Eastern
This is for a ...
- 1,274
51
votes
11
answers
151k
views
Check if current page is the Blog Page
I'm new to WordPress. I am looking for a way to check if current page is the blog page in the code of the header file.
I've checked but I can't find a way. Help me, Pls.
- 676
51
votes
7
answers
148k
views
how to get page id of a page using page slug
I'm pretty new to WordPress and I was wondering if I could get a page id with its slug. Is it possible please let me know?
- 613
45
votes
4
answers
220k
views
Show all terms of a custom taxonomy?
I made a few custom taxonomies and I need to show ALL the terms from it, what I achieved so far is showing the taxonomies that are selected/chosen in a custom post type but I need all of them to show, ...
- 741
45
votes
4
answers
263k
views
How to set and use global variables? Or why not to use them at all
UPDATE: My original question has been solved, but this is turning into a valid discussion about why not to use global variables, so I am updating the question to reflect that. The solution was <?...
- 1,228
44
votes
3
answers
33k
views
What are the differences between WPINC and ABSPATH?
It's common for plugin developers to protect their plugins from direct access. I saw two ways to do that:
if ( ! defined( 'WPINC' ) ) die;
and
if ( ! defined( 'ABSPATH' ) ) exit;
What are the ...
- 1,186
43
votes
9
answers
70k
views
Sending the reset password link programatically
I have this manually created page:
$user_login = sanitize_text_field( $_GET['user_login'] );
if ( username_exists( $user_login ) || email_exists($user_login) ) { ?>
<!--Everything has been ...
- 601
40
votes
1
answer
105k
views
How to add product in woocommerce with php code [closed]
I want to add products with PHP code like below:
$post_information = array(
'post_title' => 'new item shop',
'post_content' => 'this is new item shop',
'post_type' => 'post',
'...
- 513
38
votes
6
answers
8k
views
Using OOP in themes
I see a lot of plugins making use of object-oriented coding when there isn't really necessary.
But what's even worse is that theme developers are starting to do the same thing. Commercial themes and ...
- 13.6k
35
votes
2
answers
84k
views
what is correct way to hook when update post
i try to hook when post is updated but all hook i try never executed except updated_post_meta
add_action('updated_post_meta', 'my_function');
function my_function($post_id) {
echo 'This is ...
- 453
34
votes
3
answers
10k
views
How exactly do automatic updates work?
I received an email this morning stating that my Wordpress site had been automatically updated to the latest version. I knew about the feature but I've always wondered exactly how it works.
PHP isn't ...
- 482
31
votes
5
answers
80k
views
How to update custom fields using the wp_insert_post() function?
The WordPress function is used for submitting data programatically. Standard fields to submit to incude the content, excerpt, title, date and many more.
What there is no documentation for is how to ...
- 1,551
31
votes
5
answers
3k
views
Should all plugins be encapsulated in a Class?
When developing a plugin should the functions be grouped together into a Class to avoid namespace conflicts?
Does using classes create performance overheads for PHP?
If there is a performance hit, ...
- 533
30
votes
1
answer
37k
views
How to create custom 401, 403 and 500 error pages?
When a 404 error is encountered, a 404.php template file can be used to render a custom error message. This is documented in the Template Hierarchy article.
My aim is to create custom error pages ...
- 3,017
28
votes
5
answers
3k
views
Why have <?php and ?> on every line
I've seen this convention pretty much everywhere, and, at times, it comes close to driving me nuts:
<?php //The loop ?>
<?php while ( have_posts() ) : the_post(); ?>
<?php ...
- 431
28
votes
6
answers
13k
views
Running WP Cron on multisite the right way
I have WordPress Multisite with several sites. I set up DISABLE_WP_CRON to true in my wp-config.php.
If we set up cron task with wget or curl we have 30 sec rule to execute PHP script. It's so small ...
27
votes
3
answers
58k
views
Most efficient way to add javascript file to specific post and/or pages?
I am wondering what the most efficient method is to add a javascript file specifically for a post and/or page.
Here are a few solutions I came up with:
Switch to HTML editing view and post your ...
- 424
26
votes
2
answers
31k
views
Getting only direct child pages in WordPress with get_pages
I am trying to fetch all direct children of a page. But I am getting all children and grand children as well. Any ideas?
PHP Source:
$args = array(
'child_of' => $post->ID,
'...
- 373
25
votes
2
answers
120k
views
How to return number of found rows from SELECT query
I wrote a function which is supposed to return the number of rows found in a SELECT query but it always either seems to return 0 or an array. I have been messing around with this for about an hour now ...
- 1,324
24
votes
5
answers
35k
views
the_date() not working
I am using wordpress 3.2 and I did a query post like this:
<?php query_posts("posts_per_page=1post=type&page=post_parent=10");?>
Then I try to echo out the date of this post I queried like ...
- 343
24
votes
1
answer
63k
views
How do I use WP_query with multiple post IDs?
I want to query multiple posts with an array of IDs (note: I am querying a custom post type).
Here's what I have, which isn't working:
$myarray = array(144, 246);
$args = array(
'post_type' =>...
- 349
24
votes
2
answers
25k
views
How can I see all the actions attached to an "add_action" hook?
I'm working with the admin bar and trying to debug some of the menus and their priorities.
I know several callbacks get bound to actions, such as this one:
add_action( 'admin_bar_menu', '...
- 1,862
24
votes
2
answers
11k
views
How can I use WordPress functions in my stylesheet?
I have my style.php file looking like this.
<?php header('Content-Type: text/css');?>
#div{
background:<?php echo get_option('bgcolor');?>;
}
This does not work, but when I do this ...
- 571
22
votes
10
answers
54k
views
Disable email notification after change of password
I want to disable the email notification if a user or an admin changes the password of a user.
After some Googling I came to find that I need to create a plugin and overwrite the ...
- 986
22
votes
2
answers
54k
views
Query multiple custom post types in single loop
I'm aware there are several other posts that cover similar ground to what I'm about to ask.
I have three custom post types running, in addition to 'posts'. I want to run a loop that pulls all posts ...
- 431
21
votes
1
answer
23k
views
How to include checkbox in widget backend form?
I'm trying to include a checkbox in my widget back end. But I cannot get the value (on or off) after the user submits it. I thought the value would be stored in "esc_attr( $check )" (as it is when ...
- 995
19
votes
7
answers
39k
views
Converting timestamps to local time with date_l18n()
I've got a WordPress cron job that sends an email periodically and saves the timestamp when it was sent as an option, and I'd like to display a date on a settings page. Something like, "The last ...
- 1,825
19
votes
1
answer
28k
views
Setting $_SERVER['HTTPS']='on' prevents access to wp-admin
First off my server is sitting behind a load balancer. My SSL certificate sits on the load balancer and handles HTTPS. The data coming in on port 443 is forwarded to the Wordpress server using HTTP ...
- 593
19
votes
4
answers
3k
views
How to deprecate a function used in a plugin?
One of the functions I'm using in my plugin is polluting the global scope with a name that could collide with another function (used in another plugin). So, I guess I should deprecate it. But how ...
- 3,017
18
votes
7
answers
9k
views
Inserting terms in an Hierarchical Taxonomy
I'm really having a few issues with inserting terms. Here is my scenario: I have a taxonomy called veda_release_type:
//Release Type and Region
$labels = array(
'name'=> _x('...
- 7,334
18
votes
1
answer
85k
views
What is the meaning of %s, %1$s etc.? [closed]
From a Q&A Thread I've came to meet with some old things, but I'm afraid, I found myself in a condition that, I still don't know the meaning of them and don't know why to use them.
%1$s - (found ...
- 12.7k
17
votes
3
answers
75k
views
get current category ID php
I'm trying to get category ID of the current archive displayed.
I tried:
// category (can be a parent category)
$current_cat_ID = get_query_var('cat');
//
print_r ($current_cat_ID);
It doesn't ...
user8842
17
votes
2
answers
5k
views
To close or not to close php
I have read that it is advised (especially with php 7) to not close the php files with ?>
Many of my WP php files end like this:
<?php get_sidebar(); ?>
<?php get_footer(); ?>
Should ...
- 906
17
votes
4
answers
30k
views
How to manually fix the WordPress gallery code using PHP in functions.php?
It's been talked many times that Wordpress outputs some really bad code for the built-in gallery function.
This is the core code responsible for the gallery output (in /wp-includes/media.php):
...
- 4,491
17
votes
4
answers
16k
views
User registration followed by automatic login
I am using a plugin modified for my purposes.
What I am after is after the user has registered for it to automatically log them in and return them to the current page. At the moment it sends them an ...
- 1,551
16
votes
3
answers
137k
views
How to get permalink and title from post ID?
I have stored an array of post IDs and I would like to list the posts as links, meaning I need to get the title and permalink for the post ID - $id. The list should be echoed out by the following if ...
- 1,769
16
votes
3
answers
7k
views
Remove update nags for non-admins [duplicate]
I'm trying to remove or hide the update nags for non-admin users. As an admin, I see:
The popular answer I've seen to handle this says to use:
function hide_update_nag() {
if ( !current_user_can(...
- 765
16
votes
1
answer
12k
views
Contact form redirecting to page not found on send
I have a contact form that I used lot's of times before on other non WP sites but it doesn't seem to work on my current WP site, it just redirects you to a page not found.
I don't want to use any ...
- 1,406
15
votes
5
answers
61k
views
Setting custom cookies in Wordpress
I am trying to set cookies to re-route returning users to my a specific page within my Wordpress site.
I'd like some advice with these 2 things:
Where in the Wordpress php files should cookies be ...
- 381
15
votes
9
answers
9k
views
Adding first / last CSS classes to menus
is that possible, without javascript hacks?
like this:
<ul class="my_menu">
<li class="first"> ... </li>
<li> ... </li>
<li> ... </li>
<li class"...
- 1,081
15
votes
4
answers
137k
views
How to correctly add Javascript in functions.php
I would like to remove some ugly looking arrows that are standard on cart buttons in WooCommerce. To achieve this, I found a tip of adding the following code, which should remove the arrows when the ...
- 315
15
votes
5
answers
4k
views
How to fix the admin menu margin-top bug in WordPress 5.5?
I recently updated a WordPress instance from 5.4 to 5.5 to end up with an annoying margin-top in the admin area, above the menu directly.
I deactivated all plugins, switched themes, did some ...
- 251
15
votes
1
answer
629
views
Are WordPress Heartbeat API 'beats' staggered or do they occur simultaneously for all users?
The WordPress Heartbeat API uses admin-ajax.php to run AJAX calls. If User X leaves their browser open, many calls will be made to the server, with each call happening when there is a 'beat'. Now if ...
- 3,017
14
votes
4
answers
51k
views
Get page content using slug
I'm trying to get page content when I only know the slug string.
Is there a function for this, or an easy way to do this or is this a case of doing it via SQL?
Thanks very much
- 471
14
votes
4
answers
13k
views
WP-CLI - Selecting PHP version
On a development server I have a co-install of PHP 5.6 & 7; nginx is configured with PHP 5.6. When I type "wp" it returns several errors and at the end of the error is a message containing the ...
- 167
14
votes
5
answers
10k
views
How to change the case of all post titles to "Title Case"
I am helping my father with his WordPress website.
It has over 1,700 posts with TITLES IN UPPERCASE.
We'd like to change these to "Title Case" in the database (possibly using this PHP script).
The ...
- 243