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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 |
|---|---|
| 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 | __( '<a href="http://codex.wordpress.org/">Documentation</a>' ), |
| 25 | sprintf( __( '<a href="%s">Freedoms</a>' ), admin_url( 'freedoms.php' ) ), |
| 26 | __('<a href="http://wordpress.org/support/forum/4">Feedback</a>'), |
| 27 | sprintf(__('<a href="%s">Credits</a>'), admin_url('credits.php') ), |
| 28 | ); |
| 29 | echo apply_filters( 'admin_footer_text', implode( ' • ', $footer_text ) ); |
| 30 | unset( $footer_text ); |
| 31 | ?></p> |
| 32 | <p id="footer-upgrade" class="alignright"><?php echo $upgrade; ?></p> |
| 33 | <div class="clear"></div> |
| 34 | </div> |
| 35 | <?php |
| 36 | do_action('admin_footer', ''); |
| 37 | do_action('admin_print_footer_scripts'); |
| 38 | do_action("admin_footer-" . $GLOBALS['hook_suffix']); |