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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 |
|---|---|
| 5666 | do_action( 'deprecated_class_run', $class_name, $replacement, $version ); |
| 5667 | |
| 5668 | /** |
| 5669 | * Filters whether to trigger an error for a deprecated class. |
| 5670 | * |
| 5671 | * @since 6.4.0 |
| 5672 | * |
| 5673 | * @param bool $trigger Whether to trigger an error for a deprecated class. Default true. |
| 5674 | */ |
| 5675 | if ( WP_DEBUG && apply_filters( 'deprecated_class_trigger_error', true ) ) { |
| 5676 | if ( function_exists( '__' ) ) { |
| 5677 | if ( $replacement ) { |
| 5678 | $message = sprintf( |
| 5679 | /* translators: 1: PHP class name, 2: Version number, 3: Alternative class or function name. */ |
| 5680 | __( 'Class %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), |
| 5681 | $class_name, |
| 5682 | $version, |
| 5683 | $replacement |
| 5684 | ); |