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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 |
---|---|
3880 | /** |
3881 | * Filters whether to trigger an error for deprecated functions. |
3882 | * |
3883 | * `WP_DEBUG` must be true in addition to the filter evaluating to true. |
3884 | * |
3885 | * @since 4.3.0 |
3886 | * |
3887 | * @param bool $trigger Whether to trigger the error for deprecated functions. Default true. |
3888 | */ |
3889 | if ( WP_DEBUG && apply_filters( 'deprecated_constructor_trigger_error', true ) ) { |
3890 | if ( function_exists( '__' ) ) { |
3891 | if ( ! empty( $parent_class ) ) { |
3892 | /* translators: 1: PHP class name, 2: PHP parent class name, 3: version number, 4: __construct() method */ |
3893 | trigger_error( sprintf( __( 'The called constructor method for %1$s in %2$s is <strong>deprecated</strong> since version %3$s! Use %4$s instead.' ), |
3894 | $class, $parent_class, $version, '<pre>__construct()</pre>' ) ); |
3895 | } else { |
3896 | /* translators: 1: PHP class name, 2: version number, 3: __construct() method */ |
3897 | trigger_error( sprintf( __( 'The called constructor method for %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), |
3898 | $class, $version, '<pre>__construct()</pre>' ) ); |