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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 |
|---|---|
| 228 | // Check the e-mail address |
| 229 | if ($user_email == '') { |
| 230 | $errors['user_email'] = __('<strong>ERROR</strong>: Please type your e-mail address.'); |
| 231 | } elseif ( !is_email( $user_email ) ) { |
| 232 | $errors['user_email'] = __('<strong>ERROR</strong>: The email address isn’t correct.'); |
| 233 | $user_email = ''; |
| 234 | } elseif ( email_exists( $user_email ) ) |
| 235 | $errors['user_email'] = __('<strong>ERROR</strong>: This email is already registered, please choose another one.'); |
| 236 | |
| 237 | do_action('register_post'); |
| 238 | |
| 239 | $errors = apply_filters( 'registration_errors', $errors ); |
| 240 | |
| 241 | if ( empty( $errors ) ) { |
| 242 | $user_pass = substr( md5( uniqid( microtime() ) ), 0, 7); |
| 243 | |
| 244 | $user_id = wp_create_user( $user_login, $user_pass, $user_email ); |
| 245 | if ( !$user_id ) |
| 246 | $errors['registerfail'] = sprintf(__('<strong>ERROR</strong>: Couldn’t register you... please contact the <a href="mailto:%s">webmaster</a> !'), get_option('admin_email')); |