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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 |
|---|---|
| 656 | * |
| 657 | * @since unknown |
| 658 | * |
| 659 | * @param unknown_type $form_post |
| 660 | * @param unknown_type $type |
| 661 | * @param unknown_type $error |
| 662 | * @return unknown |
| 663 | */ |
| 664 | function request_filesystem_credentials($form_post, $type = '', $error = false, $context = false) { |
| 665 | $req_cred = apply_filters('request_filesystem_credentials', '', $form_post, $type, $error, $context); |
| 666 | if ( '' !== $req_cred ) |
| 667 | return $req_cred; |
| 668 | |
| 669 | if ( empty($type) ) |
| 670 | $type = get_filesystem_method(array(), $context); |
| 671 | |
| 672 | if ( 'direct' == $type ) |
| 673 | return true; |
| 674 | |