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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 |
|---|---|
| 138 | do_action( 'personal_options_update', $user_id ); |
| 139 | } else { |
| 140 | /** |
| 141 | * Fires before the page loads on the 'Edit User' screen. |
| 142 | * |
| 143 | * @since 2.7.0 |
| 144 | * |
| 145 | * @param int $user_id The user ID. |
| 146 | */ |
| 147 | do_action( 'edit_user_profile_update', $user_id ); |
| 148 | } |
| 149 | |
| 150 | // Update the email address in signups, if present. |
| 151 | if ( is_multisite() ) { |
| 152 | $user = get_userdata( $user_id ); |
| 153 | |
| 154 | if ( $user->user_login && isset( $_POST['email'] ) && is_email( $_POST['email'] ) && $wpdb->get_var( $wpdb->prepare( "SELECT user_login FROM {$wpdb->signups} WHERE user_login = %s", $user->user_login ) ) ) { |
| 155 | $wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->signups} SET user_email = %s WHERE user_login = %s", $_POST['email'], $user_login ) ); |
| 156 | } |