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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 |
|---|---|
| 62 | if ( empty( $blogs ) ) : |
| 63 | echo '<p>'; |
| 64 | _e( 'You must be a member of at least one site to use this page.' ); |
| 65 | echo '</p>'; |
| 66 | else : |
| 67 | ?> |
| 68 | <form id="myblogs" action="" method="post"> |
| 69 | <?php |
| 70 | choose_primary_blog(); |
| 71 | do_action( 'myblogs_allblogs_options' ); |
| 72 | ?> |
| 73 | <br clear="all" /> |
| 74 | <table class="widefat fixed"> |
| 75 | <?php |
| 76 | $settings_html = apply_filters( 'myblogs_options', '', 'global' ); |
| 77 | if ( $settings_html != '' ) { |
| 78 | echo '<tr><td valign="top"><h3>' . __( 'Global Settings' ) . '</h3></td><td>'; |
| 79 | echo $settings_html; |
| 80 | echo '</td></tr>'; |