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<?php
namespace WPMailSMTP;
use WPMailSMTP\Admin\DebugEvents\DebugEvents;
/**
* Class Debug that will save all errors or warnings generated by APIs or SMTP
* and display in area for administrators.
*
* Usage example:
* Debug::set( 'Some warning: %s', array( '%s' => $e->getMessage() );
* $debug = Debug::get(); // array
* $debug = Debug::get_last(); // string
*
* @since 1.2.0
*/
class Debug {
/**
* Key for options table where all messages will be saved to.
*
* @since 1.2.0
*/
const OPTION_KEY = 'wp_mail_smtp_debug';
/**
* Hold the cached error messages.
*
* @since 3.0.0
*
* @var array
*/
private static $cached_messages;
/**
* Save unique debug message to a debug log.
* Adds one more to a list, at the end.
*
* @since 1.2.0
* @since 3.0.0 Start saving the Debug Event IDs, instead of error messages.
* @since 3.5.0 Returns Event ID.
*
* @param mixed $message An array or string error message.
*
* @return bool|int
*/
public static function set( $message ) {
if ( empty( $message ) ) {
return false;
}
self::clear_cache();
// Log the error message to the Debug Events.
$event_id = DebugEvents::add( $message );
$all = self::get_raw();
if ( ! empty( $event_id ) ) {
array_push( $all, $event_id );
} else {
if ( ! is_string( $message ) ) {
$message = wp_json_encode( $message );
} else {
$message = wp_strip_all_tags( $message, false );
}
array_push( $all, $message );
}
update_option( self::OPTION_KEY, array_unique( $all ), false );
return $event_id;
}
/**
* Remove all messages for a debug log.
*
* @since 1.2.0
*/
public static function clear() {
self::clear_cache();
update_option( self::OPTION_KEY, [], false );
}
/**
* Clear cached error messages.
*
* @since 3.0.0
*/
private static function clear_cache() {
self::$cached_messages = null;
}
/**
* Get the raw DB debug option values.
*
* @since 3.0.0
*/
private static function get_raw() {
$all = get_option( self::OPTION_KEY, [] );
if ( ! is_array( $all ) ) {
$all = (array) $all;
}
return $all;
}
/**
* Retrieve all messages from a debug log.
*
* @since 1.2.0
*
* @return array
*/
public static function get() {
if ( isset( self::$cached_messages ) ) {
return self::$cached_messages;
}
$all = self::get_raw();
if ( empty( $all ) ) {
self::$cached_messages = [];
return [];
}
$event_ids = [];
$old_messages = [];
foreach ( $all as $item ) {
if ( is_int( $item ) ) {
$event_ids[] = (int) $item;
} else {
$old_messages[] = $item;
}
}
$event_messages = DebugEvents::get_debug_messages( $event_ids );
self::$cached_messages = array_unique( array_merge( $old_messages, $event_messages ) );
return self::$cached_messages;
}
/**
* Get the last message that was saved to a debug log.
*
* @since 1.2.0
*
* @return string
*/
public static function get_last() {
$all = self::get();
if ( ! empty( $all ) && is_array( $all ) ) {
return (string) end( $all );
}
return '';
}
/**
* Get the proper variable content output to debug.
*
* @since 1.2.0
*
* @param mixed $var Variable to output.
*
* @return string
*/
public static function pvar( $var = '' ) {
ob_start();
echo '<code>';
if ( is_bool( $var ) || empty( $var ) ) {
var_dump( $var );
} else {
print_r( $var );
}
echo '</code>';
$output = ob_get_clean();
return str_replace( array( "\r\n", "\r", "\n" ), '', $output );
}
}