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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 |
|---|---|
| 1615 | $admin_body_class .= ' locale-' . sanitize_html_class( strtolower( str_replace( '_', '-', get_locale() ) ) ); |
| 1616 | |
| 1617 | if ( is_rtl() ) |
| 1618 | $admin_body_class .= ' rtl'; |
| 1619 | |
| 1620 | ?> |
| 1621 | </head> |
| 1622 | <?php |
| 1623 | /** This filter is documented in wp-admin/admin-header.php */ |
| 1624 | $admin_body_classes = apply_filters( 'admin_body_class', '' ); |
| 1625 | ?> |
| 1626 | <body<?php |
| 1627 | /** |
| 1628 | * @global string $body_id |
| 1629 | */ |
| 1630 | if ( isset($GLOBALS['body_id']) ) echo ' id="' . $GLOBALS['body_id'] . '"'; ?> class="wp-admin wp-core-ui no-js iframe <?php echo $admin_body_classes . ' ' . $admin_body_class; ?>"> |
| 1631 | <script type="text/javascript"> |
| 1632 | (function(){ |
| 1633 | var c = document.body.className; |