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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 |
---|---|
3910 | /** |
3911 | * Filters whether to trigger an error for deprecated functions. |
3912 | * |
3913 | * `WP_DEBUG` must be true in addition to the filter evaluating to true. |
3914 | * |
3915 | * @since 4.3.0 |
3916 | * |
3917 | * @param bool $trigger Whether to trigger the error for deprecated functions. Default true. |
3918 | */ |
3919 | if ( WP_DEBUG && apply_filters( 'deprecated_constructor_trigger_error', true ) ) { |
3920 | if ( function_exists( '__' ) ) { |
3921 | if ( ! empty( $parent_class ) ) { |
3922 | /* translators: 1: PHP class name, 2: PHP parent class name, 3: version number, 4: __construct() method */ |
3923 | trigger_error( sprintf( __( 'The called constructor method for %1$s in %2$s is <strong>deprecated</strong> since version %3$s! Use %4$s instead.' ), |
3924 | $class, $parent_class, $version, '<pre>__construct()</pre>' ) ); |
3925 | } else { |
3926 | /* translators: 1: PHP class name, 2: version number, 3: __construct() method */ |
3927 | trigger_error( sprintf( __( 'The called constructor method for %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.' ), |
3928 | $class, $version, '<pre>__construct()</pre>' ) ); |