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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 |
|---|---|
| 3522 | |
| 3523 | $blog_id = (int) $args[0]; |
| 3524 | $username = $args[1]; |
| 3525 | $password = $args[2]; |
| 3526 | $post_id = (int) $args[3]; |
| 3527 | |
| 3528 | if ( isset( $args[4] ) ) |
| 3529 | $fields = $args[4]; |
| 3530 | else |
| 3531 | $fields = apply_filters( 'xmlrpc_default_revision_fields', array( 'post_date', 'post_date_gmt' ), 'wp.getRevisions' ); |
| 3532 | |
| 3533 | if ( ! $user = $this->login( $username, $password ) ) |
| 3534 | return $this->error; |
| 3535 | |
| 3536 | do_action( 'xmlrpc_call', 'wp.getRevisions' ); |
| 3537 | |
| 3538 | if ( ! $post = get_post( $post_id ) ) |
| 3539 | return new IXR_Error( 404, __( 'Invalid post ID' ) ); |
| 3540 | |