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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 |
|---|---|
| 203 | * |
| 204 | * The dynamic portion of the hook name, `$domain`, refers to the text domain. |
| 205 | * |
| 206 | * @since 5.5.0 |
| 207 | * |
| 208 | * @param string $translation Translated text. |
| 209 | * @param string $text Text to translate. |
| 210 | * @param string $domain Text domain. Unique identifier for retrieving translated strings. |
| 211 | */ |
| 212 | $translation = apply_filters( "gettext_{$domain}", $translation, $text, $domain ); |
| 213 | |
| 214 | return $translation; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Removes last item on a pipe-delimited string. |
| 219 | * |
| 220 | * Meant for removing the last item in a string, such as 'Role name|User role'. The original |
| 221 | * string will be returned if no pipe '|' characters are found in the string. |