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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 |
|---|---|
| 97 | $user_id = email_exists($email); |
| 98 | if ( !$user_id ) { // Create a new user with a random password |
| 99 | /** |
| 100 | * Fires immediately before a new user is created via the network site-new.php page. |
| 101 | * |
| 102 | * @since 4.5.0 |
| 103 | * |
| 104 | * @param string $email Email of the non-existent user. |
| 105 | */ |
| 106 | do_action( 'pre_network_site_new_created_user', $email ); |
| 107 | |
| 108 | $user_id = username_exists( $domain ); |
| 109 | if ( $user_id ) { |
| 110 | wp_die( __( 'The domain or path entered conflicts with an existing username.' ) ); |
| 111 | } |
| 112 | $password = wp_generate_password( 12, false ); |
| 113 | $user_id = wpmu_create_user( $domain, $password, $email ); |
| 114 | if ( false === $user_id ) { |
| 115 | wp_die( __( 'There was an error creating the user.' ) ); |