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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 |
---|---|
8 | require( './wp-blog-header.php' ); |
9 | require_once( ABSPATH . WPINC . '/registration.php' ); |
10 |
|
11 | if ( is_array( get_site_option( 'illegal_names' )) && isset( $_GET[ 'new' ] ) && in_array( $_GET[ 'new' ], get_site_option( 'illegal_names' ) ) == true ) { |
12 | wp_redirect( network_home_url() ); |
13 | die(); |
14 | } |
15 |
|
16 | function do_signup_header() { |
17 | do_action("signup_header"); |
18 | } |
19 | add_action( 'wp_head', 'do_signup_header' ); |
20 |
|
21 | function signuppageheaders() { |
22 | echo "<meta name='robots' content='noindex,nofollow' />\n"; |
23 | } |
24 |
|
25 | if ( !is_multisite() ) { |
26 | wp_redirect( get_option( 'siteurl' ) . "/wp-login.php?action=register" ); |