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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 |
|---|---|
| 641 | * |
| 642 | * @since unknown |
| 643 | * |
| 644 | * @param unknown_type $form_post |
| 645 | * @param unknown_type $type |
| 646 | * @param unknown_type $error |
| 647 | * @return unknown |
| 648 | */ |
| 649 | function request_filesystem_credentials($form_post, $type = '', $error = false) { |
| 650 | $req_cred = apply_filters('request_filesystem_credentials', '', $form_post, $type, $error); |
| 651 | if ( '' !== $req_cred ) |
| 652 | return $req_cred; |
| 653 | |
| 654 | if ( empty($type) ) |
| 655 | $type = get_filesystem_method(); |
| 656 | |
| 657 | if ( 'direct' == $type ) |
| 658 | return true; |
| 659 | |