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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2548 | * Filters whether the plaintext password matches the encrypted password. |
| 2549 | * |
| 2550 | * @since 2.5.0 |
| 2551 | * |
| 2552 | * @param bool $check Whether the passwords match. |
| 2553 | * @param string $password The plaintext password. |
| 2554 | * @param string $hash The hashed password. |
| 2555 | * @param string|int $user_id User ID. Can be empty. |
| 2556 | */ |
| 2557 | return apply_filters( 'check_password', $check, $password, $hash, $user_id ); |
| 2558 | } |
| 2559 | |
| 2560 | // If the stored hash is longer than an MD5, |
| 2561 | // presume the new style phpass portable hash. |
| 2562 | if ( empty( $wp_hasher ) ) { |
| 2563 | require_once ABSPATH . WPINC . '/class-phpass.php'; |
| 2564 | // By default, use the portable hash from phpass. |
| 2565 | $wp_hasher = new PasswordHash( 8, true ); |
| 2566 | } |
| 2567 | |
| 2568 | $check = $wp_hasher->CheckPassword( $password, $hash ); |
| 2569 | |
| 2570 | /** This filter is documented in wp-includes/pluggable.php */ |
| 2571 | return apply_filters( 'check_password', $check, $password, $hash, $user_id ); |
| 2572 | } |
| 2573 | endif; |
| 2574 | |
| 2575 | if ( ! function_exists( 'wp_generate_password' ) ) : |
| 2576 | /** |
| 2577 | * Generates a random password drawn from the defined set of characters. |
| 2578 | * |
| 2579 | * Uses wp_rand() is used to create passwords with far less predictability |
| 2580 | * than similar native PHP functions like `rand()` or `mt_rand()`. |