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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 |
|---|---|
| 289 | <fieldset><legend class="screen-reader-text"><span><?php _e('Time Format') ?></span></legend> |
| 290 | <?php |
| 291 | /** |
| 292 | * Filter the default time formats. |
| 293 | * |
| 294 | * @since 2.7.0 |
| 295 | * |
| 296 | * @param array $default_time_formats Array of default time formats. |
| 297 | */ |
| 298 | $time_formats = array_unique( apply_filters( 'time_formats', array( __( 'g:i a' ), 'g:i A', 'H:i' ) ) ); |
| 299 | |
| 300 | $custom = true; |
| 301 | |
| 302 | foreach ( $time_formats as $format ) { |
| 303 | echo "\t<label title='" . esc_attr($format) . "'><input type='radio' name='time_format' value='" . esc_attr($format) . "'"; |
| 304 | if ( get_option('time_format') === $format ) { // checked() uses "==" rather than "===" |
| 305 | echo " checked='checked'"; |
| 306 | $custom = false; |
| 307 | } |