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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 |
---|---|
5251 | do_action( 'deprecated_file_included', $file, $replacement, $version, $message ); |
5252 |
|
5253 | /** |
5254 | * Filters whether to trigger an error for deprecated files. |
5255 | * |
5256 | * @since 2.5.0 |
5257 | * |
5258 | * @param bool $trigger Whether to trigger the error for deprecated files. Default true. |
5259 | */ |
5260 | if ( WP_DEBUG && apply_filters( 'deprecated_file_trigger_error', true ) ) { |
5261 | $message = empty( $message ) ? '' : ' ' . $message; |
5262 |
|
5263 | if ( function_exists( '__' ) ) { |
5264 | if ( $replacement ) { |
5265 | trigger_error( |
5266 | sprintf( |
5267 | /* translators: 1: PHP file name, 2: Version number, 3: Alternative file name. */ |
5268 | __( '%1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), |
5269 | $file, |