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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 |
---|---|
719 |
|
720 | /** |
721 | * Filter the list of CSS body classes for the current post or page. |
722 | * |
723 | * @since 2.8.0 |
724 | * |
725 | * @param array $classes An array of body classes. |
726 | * @param string $class A comma-separated list of additional classes added to the body. |
727 | */ |
728 | $classes = apply_filters( 'body_class', $classes, $class ); |
729 |
|
730 | return array_unique( $classes ); |
731 | } |
732 |
|
733 | /** |
734 | * Whether post requires password and correct password has been provided. |
735 | * |
736 | * @since 2.7.0 |
737 | * |