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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 |
|---|---|
| 583 | global $wp_filesystem; |
| 584 | |
| 585 | require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'); |
| 586 | |
| 587 | $method = get_filesystem_method($args); |
| 588 | |
| 589 | if ( ! $method ) |
| 590 | return false; |
| 591 | |
| 592 | $abstraction_file = apply_filters('filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method); |
| 593 | if( ! file_exists($abstraction_file) ) |
| 594 | return; |
| 595 | |
| 596 | require_once($abstraction_file); |
| 597 | $method = "WP_Filesystem_$method"; |
| 598 | |
| 599 | $wp_filesystem = new $method($args); |
| 600 | |
| 601 | if ( $wp_filesystem->errors->get_error_code() ) |