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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 |
|---|---|
| 5209 | |
| 5210 | /** |
| 5211 | * Filters a sanitized text field string. |
| 5212 | * |
| 5213 | * @since 2.9.0 |
| 5214 | * |
| 5215 | * @param string $filtered The sanitized string. |
| 5216 | * @param string $str The string prior to being sanitized. |
| 5217 | */ |
| 5218 | return apply_filters( 'sanitize_text_field', $filtered, $str ); |
| 5219 | } |
| 5220 | |
| 5221 | /** |
| 5222 | * Sanitizes a multiline string from user input or from the database. |
| 5223 | * |
| 5224 | * The function is like sanitize_text_field(), but preserves |
| 5225 | * new lines (\n) and other whitespace, which are legitimate |
| 5226 | * input in textarea elements. |
| 5227 | * |