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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 |
---|---|
32 | |
33 | if ( empty($nickname) ) |
34 | $nickname = $user_login; |
35 | |
36 | if ( empty($user_registered) ) |
37 | $user_registered = gmdate('Y-m-d H:i:s'); |
38 |
|
39 | if ( $update ) { |
40 | $query = "UPDATE $wpdb->users SET user_pass='$user_pass', user_email='$user_email', user_url='$user_url', user_nicename = '$user_nicename', display_name = '$display_name' WHERE ID = '$ID'"; |
41 | $query = apply_filters('update_user_query', $query); |
42 | $wpdb->query( $query ); |
43 | $user_id = $ID; |
44 | } else { |
45 | $query = "INSERT INTO $wpdb->users |
46 | (user_login, user_pass, user_email, user_url, user_registered, user_nicename, display_name) |
47 | VALUES |
48 | ('$user_login', '$user_pass', '$user_email', '$user_url', '$user_registered', '$user_nicename', '$display_name')"; |
49 | $query = apply_filters('create_user_query', $query); |
50 | $wpdb->query( $query ); |