WordPress Filesystem API

WordPress introduces Filesystem API which is used to read and write files securely. While working with files, developers usually face security and compatibility issues. WP_Filesystem is a wrapper around different approaches to collaborate with the filesystem in a protected way. It embodies file operations and it additionally preserves file ownership (in read and compose case).

The initial phase in utilizing the WP_Filesystem is asking for credentials from the user:

Before the WP_Filesystem can be utilized, it must be initialized with the proper credentials:

Once WP_Filesystem is initialized then you can use global $wp_filesystem. To write a file, you can use the following script:

You can create directory by using WP_Filesystem:

You can also check if the content of file exists or not. If it exists, then you can read the content by using get_contents($folder_file) function:

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