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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 |
---|---|
4533 | do_action( 'deprecated_argument_run', $function, $message, $version ); |
4534 |
|
4535 | /** |
4536 | * Filters whether to trigger an error for deprecated arguments. |
4537 | * |
4538 | * @since 3.0.0 |
4539 | * |
4540 | * @param bool $trigger Whether to trigger the error for deprecated arguments. Default true. |
4541 | */ |
4542 | if ( WP_DEBUG && apply_filters( 'deprecated_argument_trigger_error', true ) ) { |
4543 | if ( function_exists( '__' ) ) { |
4544 | if ( ! is_null( $message ) ) { |
4545 | /* translators: 1: PHP function name, 2: version number, 3: optional message regarding the change */ |
4546 | trigger_error( sprintf( __( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s! %3$s' ), $function, $version, $message ) ); |
4547 | } else { |
4548 | /* translators: 1: PHP function name, 2: version number */ |
4549 | trigger_error( sprintf( __( '%1$s was called with an argument that is <strong>deprecated</strong> since version %2$s with no alternative available.' ), $function, $version ) ); |
4550 | } |
4551 | } else { |