Function and usage of path_join() in wordpress


Answers ( 1 )


    The path_join() function in WordPress is used to concatenate two filesystem paths. Here's a detailed explanation of its function and usage:


    • Name: path_join()
    • Purpose: To join two filesystem paths together.


    • The path_join() function is designed to create a single path by joining two separate path strings.
    • This function is particularly useful when you need to create a path that is relative to a certain base path.
    • It checks if the second path $path is an absolute path. If so, it returns the absolute path as is.
    • If $path is not absolute, it joins it with the $base path to create a new path.


    1. $base (string, required):

      • This is the base path.
      • It acts as the starting point or root directory to which the second path will be appended.
    2. $path (string, required):

      • This is the path that you want to append to the base path.
      • If this path is an absolute path, it will be returned as is, ignoring the base path.


    • Type: string
    • Description: The function returns the combined path. If $path is absolute, it returns $path; otherwise, it returns the combined path of $base and $path.

    Sample Usage:

    $base = '/var/www/html';
    $path = 'wp-content/themes';
    $full_path = path_join($base, $path);
    echo $full_path; // Outputs: /var/www/html/wp-content/themes

    In this example, $base is the root directory, and $path is the directory inside the root that we want to access. The path_join() function combines these two to create a full path to the themes directory of a WordPress installation.

    Usage with Absolute Path:

    $base = '/var/www/html';
    $path = '/usr/local/bin';
    $full_path = path_join($base, $path);
    echo $full_path; // Outputs: /usr/local/bin

    In this case, since $path is an absolute path, the function simply returns $path, ignoring the $base path.

Leave an answer