Summary of frequently used conditional branches that you want to remember (Logical Operators) [WordPress]
. This is Harururu from the PIPELINE WEB production team.
WordPress is a content management system (CMS) that is widely used to build websites and is very popular globally.
I wrote an article about conditional branching that is essential for site construction and theme development.
Summary of frequently used conditional branches [WordPress]
In this article, we will explain the "logical operator" that is useful in situations where you want to set conditions for the conditional branch in more detail.
Overview of logical operators >
Logical operators are used to specify a combination of conditions.
Among them, the following three logical operators are commonly used in WordPress.
- AND (&&): (Both A and B) return true if both conditions are true
- OR (||): (A or B) Returns true if either condition is true
- NOT (!): Inverts the truth of the condition (other than A)
don't know how to use it just by looking at this.
Now, let's explain how these logical operators are described using examples.
Examples of using logical operators >
Use Cases of AND Operators
if ( is_front_page() && is_user_logged_in() ) {
What to do when a logged-in user is on the homepage
}In this example, we determine whether the is_front_page() function is the front page of the homepage (top page) and whether the is_user_logged_in() function is logged in by the user.
If both conditions are true, the completed action is performed.
OR Operator Use Cases
if ( is_category('news') || is_category('event') ) {
Handling pages in the "news" or "event" category
}In this example, we use the is_category() function to determine whether the current page is in either the "news" or "event" category.
If either condition is true, the completed action is executed.
Examples of using the NOT operator
if ( !is_search() ) {
Handling pages other than search results
}In this example, we determine if the is_search() function is a search results page and invert it with the ! operator.
This means that if it's not on the search results page, the action you filled out will be performed.
summary
When using conditional branching in WordPress, you can use logical operators to execute code flexibly based on specific conditions.
Use the AND, OR, and NOT logical operators to effectively build your website's control flow.
For more information on the exact syntax and functions of conditional branching, we recommend visiting the official WordPress support forum.
