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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 |
|---|---|
| 4040 | do_action( 'deprecated_argument_run', $function, $message, $version ); |
| 4041 | |
| 4042 | /** |
| 4043 | * Filters whether to trigger an error for deprecated arguments. |
| 4044 | * |
| 4045 | * @since 3.0.0 |
| 4046 | * |
| 4047 | * @param bool $trigger Whether to trigger the error for deprecated arguments. Default true. |
| 4048 | */ |
| 4049 | if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) { |
| 4050 | if ( function_exists( '__' ) ) { |
| 4051 | if ( ! is_null( $message ) ) { |
| 4052 | /* translators: 1: PHP function name, 2: version number, 3: optional message regarding the change */ |
| 4053 | trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s'), $function, $version, $message ) ); |
| 4054 | } else { |
| 4055 | /* translators: 1: PHP function name, 2: version number */ |
| 4056 | trigger_error( sprintf( __('%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.'), $function, $version ) ); |
| 4057 | } |
| 4058 | } else { |