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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 |
|---|---|
| 1666 | if (strpos($_SERVER['HTTP_USER_AGENT'], 'Firefox') !== false) |
| 1667 | $link .= 'setTimeout(a,0);'; |
| 1668 | else |
| 1669 | $link .= 'a();'; |
| 1670 | |
| 1671 | $link .= "void(0);"; |
| 1672 | |
| 1673 | $link = str_replace(array("\r", "\n", "\t"), '', $link); |
| 1674 | |
| 1675 | return apply_filters('shortcut_link', $link); |
| 1676 | } |
| 1677 | |
| 1678 | /** |
| 1679 | * Retrieve the site url. |
| 1680 | * |
| 1681 | * Returns the 'site_url' option with the appropriate protocol, 'https' if |
| 1682 | * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is |
| 1683 | * overridden. |
| 1684 | * |