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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 |
|---|---|
| 185 | } |
| 186 | if ( ! empty( $errors ) ) { |
| 187 | /** |
| 188 | * Filter the error messages displayed above the login form. |
| 189 | * |
| 190 | * @since 2.1.0 |
| 191 | * |
| 192 | * @param string $errors Login error message. |
| 193 | */ |
| 194 | echo '<div id="login_error">' . apply_filters( 'login_errors', $errors ) . "</div>\n"; |
| 195 | } |
| 196 | if ( ! empty( $messages ) ) { |
| 197 | /** |
| 198 | * Filter instructional messages displayed above the login form. |
| 199 | * |
| 200 | * @since 2.5.0 |
| 201 | * |
| 202 | * @param string $messages Login messages. |
| 203 | */ |