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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 |
---|---|
615 | /** |
616 | * Filters the display output of custom columns in the Users list table. |
617 | * |
618 | * @since 2.8.0 |
619 | * |
620 | * @param string $output Custom column output. Default empty. |
621 | * @param string $column_name Column name. |
622 | * @param int $user_id ID of the currently-listed user. |
623 | */ |
624 | $row .= apply_filters( 'manage_users_custom_column', '', $column_name, $user_object->ID ); |
625 | } |
626 |
|
627 | if ( $primary === $column_name ) { |
628 | $row .= $this->row_actions( $actions ); |
629 | } |
630 | $row .= '</td>'; |
631 | } |
632 | } |
633 | $row .= '</tr>'; |