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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 |
|---|---|
| 2480 | $value = esc_url_raw($value); |
| 2481 | } else { |
| 2482 | $value = get_option( $option ); // Resets option to stored value in the case of failed sanitization |
| 2483 | if ( function_exists('add_settings_error') ) |
| 2484 | add_settings_error('home', 'invalid_home', __('The Site address you entered did not appear to be a valid URL. Please enter a valid URL.')); |
| 2485 | } |
| 2486 | break; |
| 2487 | |
| 2488 | default : |
| 2489 | $value = apply_filters("sanitize_option_{$option}", $value, $option); |
| 2490 | break; |
| 2491 | } |
| 2492 | |
| 2493 | return $value; |
| 2494 | } |
| 2495 | |
| 2496 | /** |
| 2497 | * Parses a string into variables to be stored in an array. |
| 2498 | * |