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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 |
|---|---|
| 4471 | /** |
| 4472 | * Filters a string cleaned and escaped for output as a URL. |
| 4473 | * |
| 4474 | * @since 2.3.0 |
| 4475 | * |
| 4476 | * @param string $good_protocol_url The cleaned URL to be returned. |
| 4477 | * @param string $original_url The URL prior to cleaning. |
| 4478 | * @param string $_context If 'display', replace ampersands and single quotes only. |
| 4479 | */ |
| 4480 | return apply_filters( 'clean_url', $good_protocol_url, $original_url, $_context ); |
| 4481 | } |
| 4482 | |
| 4483 | /** |
| 4484 | * Sanitizes a URL for database or redirect usage. |
| 4485 | * |
| 4486 | * This function is an alias for sanitize_url(). |
| 4487 | * |
| 4488 | * @since 2.8.0 |
| 4489 | * @since 6.1.0 Turned into an alias for sanitize_url(). |