Using wp_basename to retrieve the base name of a file path in WordPress

The wp_basename function in WordPress is a function that retrieves the base name of a path. This function is part of the WordPress Filesystem API.

The purpose of this function is to return the trailing name component of a path. In simpler terms, it extracts and returns the name of a file or a directory from a specified path. This function can be useful in various scenarios where there is a need to isolate the file or directory name from a complete path.

For instance, if there is a path to a specific file located within a complex directory structure, the wp_basename function can be used to extract just the name of that file. Similarly, it can be used to retrieve the name of a directory from a specified path. The function operates by trimming the path input from the right until it encounters the first slash.

By providing the ability to extract the base name from a given path, the wp_basename function contributes to the manipulation and management of file and directory paths within the WordPress environment.

Parameters Accepted by the wp_basename Function

The WordPress wp_basename function accepts two parameters which are detailed below:

  • $path (string) – This is a required parameter. It represents the path that needs to be processed.
  • $suffix (string) – This is an optional parameter and its default value is an empty string (”). It signifies a suffix in the filename. If the filename ends with this suffix, it will be removed.

Return Value of the wp_basename Function

The wp_basename function in WordPress returns a string value. This value is the last part of the path processed, with the optional suffix removed if it was present in the filename.


How to Get the Base Name of a File Path Using wp_basename

$file_path = "/var/www/html/wp-content/themes/mytheme/style.css";
$base_name = wp_basename($file_path);
echo "<p>Base name of the file is: $base_name</p>";

This code snippet gets the base name of a file path using the wp_basename function in WordPress. It takes a full file path stored in the $file_path variable and uses wp_basename to extract the base name of the file (the file name without the path), which is then stored in the $base_name variable. The base name of the file is then printed out within a paragraph HTML tag.

How to Use wp_basename in a Conditional Statement

$file_path = "/var/www/html/wp-content/themes/mytheme/style.css";
$base_name = wp_basename($file_path);

if($base_name == "style.css") {
 echo "<p>The base name is style.css</p>";
} else {
 echo "<p>The base name is not style.css</p>";

This code snippet shows how to use the wp_basename function in a conditional statement. It extracts the base name from a file path and compares it to a specified string (“style.css”). If the base name matches the specified string, it prints out a message saying that the base name is “style.css”. If not, it prints out a message saying that the base name is not “style.css”.


The wp_basename function is a WordPress-specific function that operates by retrieving the file name from a given file path. It does this by removing the path and leaving only the name of the file. This function can be used in various scenarios, such as when developing themes or plugins where there is a need to handle file paths and extract file names. It is important to note that unlike the PHP basename function, the wp_basename function is fully compatible with both Windows and Unix-like operating systems, ensuring consistent results across different platforms.

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