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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 |
|---|---|
| 140 | $add_user_errors = $user_details[ 'errors' ]; |
| 141 | } else { |
| 142 | /** |
| 143 | * Filters the user_login, also known as the username, before it is added to the site. |
| 144 | * |
| 145 | * @since 2.0.3 |
| 146 | * |
| 147 | * @param string $user_login The sanitized username. |
| 148 | */ |
| 149 | $new_user_login = apply_filters( 'pre_user_login', sanitize_user( wp_unslash( $_REQUEST['user_login'] ), true ) ); |
| 150 | if ( isset( $_POST[ 'noconfirmation' ] ) && current_user_can( 'manage_network_users' ) ) { |
| 151 | add_filter( 'wpmu_signup_user_notification', '__return_false' ); // Disable confirmation email |
| 152 | add_filter( 'wpmu_welcome_user_notification', '__return_false' ); // Disable welcome email |
| 153 | } |
| 154 | wpmu_signup_user( $new_user_login, $new_user_email, array( 'add_to_blog' => $wpdb->blogid, 'new_role' => $_REQUEST['role'] ) ); |
| 155 | if ( isset( $_POST[ 'noconfirmation' ] ) && current_user_can( 'manage_network_users' ) ) { |
| 156 | $key = $wpdb->get_var( $wpdb->prepare( "SELECT activation_key FROM {$wpdb->signups} WHERE user_login = %s AND user_email = %s", $new_user_login, $new_user_email ) ); |
| 157 | $new_user = wpmu_activate_signup( $key ); |
| 158 | if ( is_wp_error( $new_user ) ) { |