Cannot modify header information – headers already sent
You should use the template_redirect action instead of wp_loaded. It’s a good practice add die(); after wp_redirect() to.
php
Query posts by custom fields (object post)
If you use Post Object field type, then it is stored as ID in custom field. So this should do the trick: $posts = get_posts(array( ‘numberposts’ => -1, ‘post_type’ => ‘post’, ‘meta_key’ => ‘<FIELD_NAME>’, ‘meta_value’ => <POST_ID> )); PS. You should use ‘posts_per_page’ instead of ‘numberposts’ (which is deprecated).
post_exists() returns a 0 but the 0 doesn’t register [closed]
You’re not checking the value correctly. A single = sign is the assignment operator. So when you write $variable = 0 you are setting the variable to 0. This happens regardless of whether or not you’re in an if statement. So when you write if ( $testvalue = 0 ) { you’re setting $testvalue to … Read more
Adding placeholder text field to woocommerce checkout [closed]
Add the code in your themes functions.php. add_filter( ‘woocommerce_checkout_fields’ , ‘override_billing_checkout_fields’, 20, 1 ); function override_billing_checkout_fields( $fields ) { $fields[‘billing’][‘billing_first_name’][‘placeholder’] = ‘Enter First Name’; $fields[‘billing’][‘billing_last_name’][‘placeholder’] = ‘Enter Last Name’; return $fields; } Solved by adding the code in this way
wordpress select multiple options and illegal string offset ‘timeslot’ [closed]
You are getting illegal string offset ‘timeslot’ because $time is not an array, it is an item in array $timeslots. You have already retrieved the values submitted using $timeslots = $_POST[‘timeslot’]; Your code also contains other typing mistakes. Here is corrected code: <form method=”POST”> <select name=”timeslot[]” multiple=”multiple” size = 4 required> <option value=”1″>1</option> <option value=”2″>2</option> … Read more
Echo piece of code from file
You can do this by putting your piece of code in a function and call it where required just like any template tag. <?php function the_logo(){ ?> <div id=”logo”> <?php if( get_theme_mod( ‘mlwd_logo_image’) ) : ?> <img src=”https://wordpress.stackexchange.com/questions/337491/<?php echo esc_url(get_theme_mod(“mlwd_logo_image’)); ?>” alt=”Logo”/> <?php else: ?> <h1> <a href=”<?php echo home_url(); ?>” title=”<?php bloginfo(‘name’); ?>”> <?php … Read more
SHARING TO FACEBOOK – FROM DYNAMICALLY GENERATED PAGE
I used this code; change values as needed, get an FB app ID. And it’s not immediate; there is a process to clear the FB cache of a page so it gets the current info. (Can’t find it right now…but I think it’s on the FB app pages.) (I added the viewport meta value; always … Read more
How to show blog posts changing every time after refreshing the page in non-wordpress website?
This line is responsible for posts that are showing: query_posts(‘showposts=4’); All you tell in it is “take 4 posts” and WP will take 4 most recent posts, because that’s the default behavior. If you want to take random posts, you have to tell WP to order posts randomly: query_posts( array( ‘posts_per_page’ => 4, ‘orderby’ => … Read more
where is the mistake in PHP Warning: Invalid argument supplied for foreach() in line 3
get_the_tags() returns an array or false on failure. (It appears it may also return a WP_Error object under certain circumstances.) It also requires a parameter: the post ID. You’re not passing that, so you’re not going to get the array your code expects. Edit You can’t just call get_the_tags() — that’ll just get you a … Read more
HOW TO Insert Existing PHP Code to WOrdPress
Generally speaking, you can typically take PHP code and place a comment at the top: <?php /* Plugin Name: My SOAP Plugin */ ?> You can then create a folder for the plugin inside /wp-content/plugins/ (for example, /wp-conten/plugins/my-soap-plugin/) and place the PHP file inside that folder. At that point, you can activate the plugin from … Read more