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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 |
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43 |
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44 | // Don't index any of these forms |
45 | add_action( 'login_head', 'wp_no_robots' ); |
46 |
|
47 | if ( empty($wp_error) ) |
48 | $wp_error = new WP_Error(); |
49 |
|
50 | // Shake it! |
51 | $shake_error_codes = array( 'empty_password', 'empty_email', 'invalid_email', 'invalidcombo', 'empty_username', 'invalid_username', 'incorrect_password' ); |
52 | $shake_error_codes = apply_filters( 'shake_error_codes', $shake_error_codes ); |
53 |
|
54 | if ( $shake_error_codes && $wp_error->get_error_code() && in_array( $wp_error->get_error_code(), $shake_error_codes ) ) |
55 | add_action( 'login_head', 'wp_shake_js', 12 ); |
56 |
|
57 | ?> |
58 | <!DOCTYPE html> |
59 | <html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>> |
60 | <head> |
61 | <meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php bloginfo('charset'); ?>" /> |