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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 |
---|---|
94 |
|
95 | if ( empty($rich_editing) ) |
96 | $rich_editing = 'true'; |
97 |
|
98 | if ( empty($user_registered) ) |
99 | $user_registered = gmdate('Y-m-d H:i:s'); |
100 |
|
101 | if ( $update ) { |
102 | $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'"; |
103 | $query = apply_filters('update_user_query', $query); |
104 | $wpdb->query( $query ); |
105 | $user_id = (int) $ID; |
106 | } else { |
107 | $query = "INSERT INTO $wpdb->users |
108 | (user_login, user_pass, user_email, user_url, user_registered, user_nicename, display_name) |
109 | VALUES |
110 | ('$user_login', '$user_pass', '$user_email', '$user_url', '$user_registered', '$user_nicename', '$display_name')"; |
111 | $query = apply_filters('create_user_query', $query); |
112 | $wpdb->query( $query ); |