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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 420 | global $wp_filesystem; |
| 421 | |
| 422 | require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'); |
| 423 | |
| 424 | $method = get_filesystem_method(); |
| 425 | |
| 426 | if ( ! $method ) |
| 427 | return false; |
| 428 | |
| 429 | $abstraction_file = apply_filters('filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-'.$method.'.php', $method); |
| 430 | if( ! file_exists($abstraction_file) ) |
| 431 | return; |
| 432 | |
| 433 | require_once($abstraction_file); |
| 434 | $method = "WP_Filesystem_$method"; |
| 435 | |
| 436 | $wp_filesystem = new $method($args); |
| 437 | |
| 438 | if ( $wp_filesystem->errors->get_error_code() ) |