$re = '/\[(?<email1>[^\@]+\@[^\@]+)\]\s+\[.*emailAddress\":\"(?<email2>[^\"]+)/m';
$str = '[INFO ] 2020-11-16 20:52:30,729 (http-nio-8085-exec-127) [MyServiceImpl(emailServ:6431)] [my email@yahoo.com] [4223TD-E3DE-2345-8E59-1-YDHGC] Validation failed.Invalid. Response JSON {"emailAddress":"mynewemail","statusReason":"failed_syntax_check","domain":"","processedAt":"2020-11-16 20:52:30 GMT-0700 (MST)","cache":false,"account":"","status":"invalid"}';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php