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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 |
|---|---|
| 814 | if ( get_user_option( 'rich_editing' ) == 'true' && |
| 815 | ( ( preg_match( '!AppleWebKit/(\d+)!', $_SERVER['HTTP_USER_AGENT'], $match ) && intval($match[1]) >= 420 ) || |
| 816 | !preg_match( '!opera[ /][2-8]|konqueror|safari!i', $_SERVER['HTTP_USER_AGENT'] ) ) ) { |
| 817 | $wp_rich_edit = true; |
| 818 | } else { |
| 819 | $wp_rich_edit = false; |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | return apply_filters('user_can_richedit', $wp_rich_edit); |
| 824 | } |
| 825 | |
| 826 | function the_editor($content, $id = 'content', $prev_id = 'title') { |
| 827 | $rows = get_option('default_post_edit_rows'); |
| 828 | if (($rows < 3) || ($rows > 100)) |
| 829 | $rows = 12; |
| 830 | |
| 831 | $rows = "rows='$rows'"; |
| 832 | |