Title: WP_Filesystem_FTPext::is_file
Published: April 25, 2014
Last modified: May 20, 2026

---

# WP_Filesystem_FTPext::is_file( string $file ): bool

## In this article

 * [Parameters](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#parameters)
 * [Return](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#wp--skip-link--target)

Checks if resource is a file.

## 󠀁[Parameters](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#parameters)󠁿

 `$file`stringrequired

File path.

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#return)󠁿

 bool Whether $file is a file.

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#source)󠁿

    ```php
    public function is_file( $file ) {
    	return $this->exists( $file ) && ! $this->is_dir( $file );
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-admin/includes/class-wp-filesystem-ftpext.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-admin/includes/class-wp-filesystem-ftpext.php#L455)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/class-wp-filesystem-ftpext.php#L455-L457)

## 󠀁[Related](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#related)󠁿

| Uses | Description | 
| [WP_Filesystem_FTPext::is_dir()](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_dir/)`wp-admin/includes/class-wp-filesystem-ftpext.php` |

Checks if resource is a directory.

  | 
| [WP_Filesystem_FTPext::exists()](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/exists/)`wp-admin/includes/class-wp-filesystem-ftpext.php` |

Checks if a file or directory exists.

  |

| Used by | Description | 
| [WP_Filesystem_FTPext::dirlist()](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/dirlist/)`wp-admin/includes/class-wp-filesystem-ftpext.php` |

Gets details for files in a directory or a specific file.

  | 
| [WP_Filesystem_FTPext::chmod()](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/chmod/)`wp-admin/includes/class-wp-filesystem-ftpext.php` |

Changes filesystem permissions.

  | 
| [WP_Filesystem_FTPext::delete()](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/delete/)`wp-admin/includes/class-wp-filesystem-ftpext.php` |

Deletes a file or directory.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wp_filesystem_ftpext/is_file/?output_format=md#changelog)󠁿

| Version | Description | 
| [2.5.0](https://developer.wordpress.org/reference/since/2.5.0/) | Introduced. |

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