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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 |
|---|---|
| 217 | $errors->add('empty_email', __('<strong>ERROR</strong>: Please type your e-mail address.')); |
| 218 | } elseif ( !is_email( $user_email ) ) { |
| 219 | $errors->add('invalid_email', __('<strong>ERROR</strong>: The email address isn’t correct.')); |
| 220 | $user_email = ''; |
| 221 | } elseif ( email_exists( $user_email ) ) |
| 222 | $errors->add('email_exists', __('<strong>ERROR</strong>: This email is already registered, please choose another one.')); |
| 223 | |
| 224 | do_action('register_post', $user_login, $user_email, $errors); |
| 225 | |
| 226 | $errors = apply_filters( 'registration_errors', $errors ); |
| 227 | |
| 228 | if ( $errors->get_error_code() ) |
| 229 | return $errors; |
| 230 | |
| 231 | $user_pass = wp_generate_password(); |
| 232 | $user_id = wp_create_user( $user_login, $user_pass, $user_email ); |
| 233 | if ( !$user_id ) { |
| 234 | $errors->add('registerfail', sprintf(__('<strong>ERROR</strong>: Couldn’t register you... please contact the <a href="mailto:%s">webmaster</a> !'), get_option('admin_email'))); |
| 235 | return $errors; |