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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 |
|---|---|
| 119 | /** |
| 120 | * Filters the site icon attachment metadata. |
| 121 | * |
| 122 | * @since 4.3.0 |
| 123 | * |
| 124 | * @see wp_generate_attachment_metadata() |
| 125 | * |
| 126 | * @param array $metadata Attachment metadata. |
| 127 | */ |
| 128 | $metadata = apply_filters( 'site_icon_attachment_metadata', $metadata ); |
| 129 | wp_update_attachment_metadata( $attachment_id, $metadata ); |
| 130 | |
| 131 | return $attachment_id; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Adds additional sizes to be made when creating the site icon images. |
| 136 | * |
| 137 | * @since 4.3.0 |