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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 |
|---|---|
| 2526 | $value = esc_url_raw($value); |
| 2527 | } else { |
| 2528 | $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization |
| 2529 | if ( function_exists('add_settings_error') ) |
| 2530 | add_settings_error('home', 'invalid_home', __('The Site address you entered did not appear to be a valid URL. Please enter a valid URL.')); |
| 2531 | } |
| 2532 | break; |
| 2533 | |
| 2534 | default : |
| 2535 | $value = apply_filters("sanitize_option_{$option}", $value, $option); |
| 2536 | break; |
| 2537 | } |
| 2538 | |
| 2539 | return $value; |
| 2540 | } |
| 2541 | |
| 2542 | /** |
| 2543 | * Parses a string into variables to be stored in an array. |
| 2544 | * |