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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.
This hook occurs 6 times in this file.
Line | Code |
---|---|
626 | if ( is_array( $context ) ) { |
627 | /** |
628 | * Filters HTML elements allowed for a given context. |
629 | * |
630 | * @since 3.5.0 |
631 | * |
632 | * @param array $context Context to judge allowed tags by. |
633 | * @param string $context_type Context type (explicit). |
634 | */ |
635 | return apply_filters( 'wp_kses_allowed_html', $context, 'explicit' ); |
636 | } |
637 |
|
638 | switch ( $context ) { |
639 | case 'post': |
640 | /** This filter is documented in wp-includes/kses.php */ |
641 | return apply_filters( 'wp_kses_allowed_html', $allowedposttags, $context ); |
642 |
|
643 | case 'user_description': |
644 | case 'pre_user_description': |
645 | $tags = $allowedtags; |
646 | $tags['a']['rel'] = true; |
647 | /** This filter is documented in wp-includes/kses.php */ |
648 | return apply_filters( 'wp_kses_allowed_html', $tags, $context ); |
649 |
|
650 | case 'strip': |
651 | /** This filter is documented in wp-includes/kses.php */ |
652 | return apply_filters( 'wp_kses_allowed_html', array(), $context ); |
653 |
|
654 | case 'entities': |
655 | /** This filter is documented in wp-includes/kses.php */ |
656 | return apply_filters( 'wp_kses_allowed_html', $allowedentitynames, $context); |
657 |
|
658 | case 'data': |
659 | default: |
660 | /** This filter is documented in wp-includes/kses.php */ |
661 | return apply_filters( 'wp_kses_allowed_html', $allowedtags, $context ); |
662 | } |
663 | } |
664 |
|
665 | /** |
666 | * You add any kses hooks here. |
667 | * |
668 | * There is currently only one kses WordPress hook, {@see 'pre_kses'}, and it is called here. |
669 | * All parameters are passed to the hooks and expected to receive a string. |
670 | * |