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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 |
|---|---|
| 563 | $slug = "$slug.$ext"; |
| 564 | $file = wp_upload_bits( $slug, NULL, $bits); |
| 565 | |
| 566 | log_app('wp_upload_bits returns:',print_r($file,true)); |
| 567 | |
| 568 | $url = $file['url']; |
| 569 | $file = $file['file']; |
| 570 | $filename = basename($file); |
| 571 | |
| 572 | $header = apply_filters('wp_create_file_in_uploads', $file); // replicate |
| 573 | |
| 574 | // Construct the attachment array |
| 575 | $attachment = array( |
| 576 | 'post_title' => $slug, |
| 577 | 'post_content' => $slug, |
| 578 | 'post_status' => 'attachment', |
| 579 | 'post_parent' => 0, |
| 580 | 'post_mime_type' => $type, |
| 581 | 'guid' => $url |