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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 |
|---|---|
| 1596 | } |
| 1597 | |
| 1598 | /** |
| 1599 | * Filter the wp_dropdown_users() HTML output. |
| 1600 | * |
| 1601 | * @since 2.3.0 |
| 1602 | * |
| 1603 | * @param string $output HTML output generated by wp_dropdown_users(). |
| 1604 | */ |
| 1605 | $html = apply_filters( 'wp_dropdown_users', $output ); |
| 1606 | |
| 1607 | if ( $r['echo'] ) { |
| 1608 | echo $html; |
| 1609 | } |
| 1610 | return $html; |
| 1611 | } |
| 1612 | |
| 1613 | /** |
| 1614 | * Sanitize user field based on context. |