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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.
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57 |
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58 | <label for="close_comments_for_old_posts"> |
59 | <input name="close_comments_for_old_posts" type="checkbox" id="close_comments_for_old_posts" value="1" <?php checked('1', get_option('close_comments_for_old_posts')); ?> /> |
60 | <?php printf( __('Automatically close comments on articles older than %s days'), '</label><input name="close_comments_days_old" type="text" id="close_comments_days_old" value="' . esc_attr(get_option('close_comments_days_old')) . '" class="small-text" />') ?> |
61 | <br /> |
62 | <label for="thread_comments"> |
63 | <input name="thread_comments" type="checkbox" id="thread_comments" value="1" <?php checked('1', get_option('thread_comments')); ?> /> |
64 | <?php |
65 |
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66 | $maxdeep = (int) apply_filters( 'thread_comments_depth_max', 10 ); |
67 |
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68 | $thread_comments_depth = '</label><select name="thread_comments_depth" id="thread_comments_depth">'; |
69 | for ( $i = 2; $i <= $maxdeep; $i++ ) { |
70 | $thread_comments_depth .= "<option value='" . esc_attr($i) . "'"; |
71 | if ( get_option('thread_comments_depth') == $i ) $thread_comments_depth .= " selected='selected'"; |
72 | $thread_comments_depth .= ">$i</option>"; |
73 | } |
74 | $thread_comments_depth .= '</select>'; |
75 |
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