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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 |
|---|---|
| 810 | |
| 811 | require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'); |
| 812 | |
| 813 | $method = get_filesystem_method($args, $context); |
| 814 | |
| 815 | if ( ! $method ) |
| 816 | return false; |
| 817 | |
| 818 | if ( ! class_exists("WP_Filesystem_$method") ) { |
| 819 | $abstraction_file = apply_filters('filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method); |
| 820 | if ( ! file_exists($abstraction_file) ) |
| 821 | return; |
| 822 | |
| 823 | require_once($abstraction_file); |
| 824 | } |
| 825 | $method = "WP_Filesystem_$method"; |
| 826 | |
| 827 | $wp_filesystem = new $method($args); |
| 828 | |