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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 |
|---|---|
| 3007 | 'post_parent' => $post_id, |
| 3008 | 'post_mime_type' => $type, |
| 3009 | 'guid' => $upload[ 'url' ] |
| 3010 | ); |
| 3011 | |
| 3012 | // Save the data |
| 3013 | $id = wp_insert_attachment( $attachment, $upload[ 'file' ], $post_id ); |
| 3014 | wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $upload['file'] ) ); |
| 3015 | |
| 3016 | return apply_filters( 'wp_handle_upload', array( 'file' => $name, 'url' => $upload[ 'url' ], 'type' => $type ), 'upload' ); |
| 3017 | } |
| 3018 | |
| 3019 | /* MovableType API functions |
| 3020 | * specs on http://www.movabletype.org/docs/mtmanual_programmatic.html |
| 3021 | */ |
| 3022 | |
| 3023 | /** |
| 3024 | * Retrieve the post titles of recent posts. |
| 3025 | * |