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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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671 |
|
672 | /** |
673 | * Filter the list of CSS body classes for the current post or page. |
674 | * |
675 | * @since 2.8.0 |
676 | * |
677 | * @param array $classes An array of body classes. |
678 | * @param string $class A comma-separated list of additional classes added to the body. |
679 | */ |
680 | $classes = apply_filters( 'body_class', $classes, $class ); |
681 |
|
682 | return array_unique( $classes ); |
683 | } |
684 |
|
685 | /** |
686 | * Whether post requires password and correct password has been provided. |
687 | * |
688 | * @since 2.7.0 |
689 | * |