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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 |
|---|---|
| 3476 | * Filter the URL for a user's profile editor. |
| 3477 | * |
| 3478 | * @since 3.1.0 |
| 3479 | * |
| 3480 | * @param string $url The complete URL including scheme and path. |
| 3481 | * @param int $user_id The user ID. |
| 3482 | * @param string $scheme Scheme to give the URL context. Accepts 'http', 'https', 'login', |
| 3483 | * 'login_post', 'admin', 'relative' or null. |
| 3484 | */ |
| 3485 | return apply_filters( 'edit_profile_url', $url, $user_id, $scheme); |
| 3486 | } |
| 3487 | |
| 3488 | /** |
| 3489 | * Output rel=canonical for singular queries. |
| 3490 | * |
| 3491 | * @since 2.9.0 |
| 3492 | */ |
| 3493 | function rel_canonical() { |
| 3494 | if ( ! is_singular() ) { |