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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 |
|---|---|
| 10 | if ( !defined('ABSPATH') ) |
| 11 | die('-1'); |
| 12 | ?> |
| 13 | |
| 14 | <div class="clear"></div></div><!-- wpbody-content --> |
| 15 | <div class="clear"></div></div><!-- wpbody --> |
| 16 | <div class="clear"></div></div><!-- wpcontent --> |
| 17 | |
| 18 | <div id="footer"> |
| 19 | <?php do_action( 'in_admin_footer' ); ?> |
| 20 | <p id="footer-left" class="alignleft"><?php |
| 21 | $upgrade = apply_filters( 'update_footer', '' ); |
| 22 | $footer_text = array( |
| 23 | '<span id="footer-thankyou">' . __( 'Thank you for creating with <a href="http://wordpress.org/">WordPress</a>.' ) . '</span>', |
| 24 | ); |
| 25 | echo apply_filters( 'admin_footer_text', implode( ' • ', $footer_text ) ); |
| 26 | unset( $footer_text ); |
| 27 | ?></p> |
| 28 | <p id="footer-upgrade" class="alignright"><?php echo $upgrade; ?></p> |