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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 |
|---|---|
| 4003 | $safe_text = htmlspecialchars( $text, ENT_QUOTES, get_option( 'blog_charset' ) ); |
| 4004 | /** |
| 4005 | * Filters a string cleaned and escaped for output in a textarea element. |
| 4006 | * |
| 4007 | * @since 3.1.0 |
| 4008 | * |
| 4009 | * @param string $safe_text The text after it has been escaped. |
| 4010 | * @param string $text The text prior to being escaped. |
| 4011 | */ |
| 4012 | return apply_filters( 'esc_textarea', $safe_text, $text ); |
| 4013 | } |
| 4014 | |
| 4015 | /** |
| 4016 | * Escape an HTML tag name. |
| 4017 | * |
| 4018 | * @since 2.5.0 |
| 4019 | * |
| 4020 | * @param string $tag_name |
| 4021 | * @return string |