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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 |
|---|---|
| 3019 | $safe_text = htmlspecialchars( $text, ENT_QUOTES, get_option( 'blog_charset' ) ); |
| 3020 | /** |
| 3021 | * Filter a string cleaned and escaped for output in a textarea element. |
| 3022 | * |
| 3023 | * @since 3.1.0 |
| 3024 | * |
| 3025 | * @param string $safe_text The text after it has been escaped. |
| 3026 | * @param string $text The text prior to being escaped. |
| 3027 | */ |
| 3028 | return apply_filters( 'esc_textarea', $safe_text, $text ); |
| 3029 | } |
| 3030 | |
| 3031 | /** |
| 3032 | * Escape an HTML tag name. |
| 3033 | * |
| 3034 | * @since 2.5.0 |
| 3035 | * |
| 3036 | * @param string $tag_name |
| 3037 | * @return string |