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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 |
|---|---|
| 86 | |
| 87 | return $error; |
| 88 | } |
| 89 | |
| 90 | $user = get_user_by('login', $username); |
| 91 | |
| 92 | if ( !$user ) |
| 93 | return new WP_Error( 'invalid_username', sprintf( __( '<strong>ERROR</strong>: Invalid username. <a href="%s" title="Password Lost and Found">Lost your password</a>?' ), wp_lostpassword_url() ) ); |
| 94 | |
| 95 | $user = apply_filters('wp_authenticate_user', $user, $password); |
| 96 | if ( is_wp_error($user) ) |
| 97 | return $user; |
| 98 | |
| 99 | if ( !wp_check_password($password, $user->user_pass, $user->ID) ) |
| 100 | return new WP_Error( 'incorrect_password', sprintf( __( '<strong>ERROR</strong>: The password you entered for the username <strong>%1$s</strong> is incorrect. <a href="%2$s" title="Password Lost and Found">Lost your password</a>?' ), |
| 101 | $username, wp_lostpassword_url() ) ); |
| 102 | |
| 103 | return $user; |
| 104 | } |