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Check whether variable is a WordPress Error.
Looks at the object and if a WP_Error class. Does not check to see if the parent is also WP_Error, so can't inherit WP_Error and still use this function.
<?php is_wp_error( $thing ); ?>
if ( is_wp_error( $result ) ) {
$error_string = $result->get_error_message();
echo '<div id="message" class="error"><p>' . $error_string . '</p></div>';
}
Since: 2.1.0
is_wp_error() is located in wp-includes/class-wp-error.php.