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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 |
---|---|
874 | global $type, $tab; |
875 |
|
876 | $flash_action_url = admin_url('async-upload.php'); |
877 |
|
878 | // If Mac and mod_security, no Flash. :( |
879 | $flash = true; |
880 | if ( false !== strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'mac') && apache_mod_loaded('mod_security') ) |
881 | $flash = false; |
882 |
|
883 | $flash = apply_filters('flash_uploader', $flash); |
884 | $post_id = intval($_REQUEST['post_id']); |
885 |
|
886 | ?> |
887 | <input type='hidden' name='post_id' value='<?php echo (int) $post_id; ?>' /> |
888 | <div id="media-upload-notice"> |
889 | <?php if (isset($errors['upload_notice']) ) { ?> |
890 | <?php echo $errors['upload_notice']; ?> |
891 | <?php } ?> |
892 | </div> |