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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 |
|---|---|
| 4777 | * Text passed to esc_xml() is stripped of invalid or special characters |
| 4778 | * before output. HTML named character references are converted to their |
| 4779 | * equivalent code points. |
| 4780 | * |
| 4781 | * @since 5.5.0 |
| 4782 | * |
| 4783 | * @param string $safe_text The text after it has been escaped. |
| 4784 | * @param string $text The text prior to being escaped. |
| 4785 | */ |
| 4786 | return apply_filters( 'esc_xml', $safe_text, $text ); |
| 4787 | } |
| 4788 | |
| 4789 | /** |
| 4790 | * Escapes an HTML tag name. |
| 4791 | * |
| 4792 | * @since 2.5.0 |
| 4793 | * @since 6.5.5 Allow hyphens in tag names (i.e. custom elements). |
| 4794 | * |
| 4795 | * @param string $tag_name |