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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 |
|---|---|
| 1582 | /** |
| 1583 | * Filter the default post display states used in the Posts list table. |
| 1584 | * |
| 1585 | * @since 2.8.0 |
| 1586 | * |
| 1587 | * @param array $post_states An array of post display states. Values include 'Password protected', |
| 1588 | * 'Private', 'Draft', 'Pending', and 'Sticky'. |
| 1589 | * @param int $post The post ID. |
| 1590 | */ |
| 1591 | $post_states = apply_filters( 'display_post_states', $post_states, $post ); |
| 1592 | |
| 1593 | if ( ! empty($post_states) ) { |
| 1594 | $state_count = count($post_states); |
| 1595 | $i = 0; |
| 1596 | echo ' - '; |
| 1597 | foreach ( $post_states as $state ) { |
| 1598 | ++$i; |
| 1599 | ( $i == $state_count ) ? $sep = '' : $sep = ', '; |
| 1600 | echo "<span class='post-state'>$state$sep</span>"; |