$re = '/(.*?) (.*?) (.*?) ([0-9.]+):([0-9]*) ([0-9.]+):([0-9]*) ([.0-9]*) ([.0-9]*) ([.0-9]*) (-|[0-9]*) (-|[0-9]*) ([-0-9]*) ([-0-9]*) "(. *?) .*:([0-9]+)([^? ]*)(\\\\x3f?.*?) (.*?)" "(.*?)" (.*?) (.*?) (.*?) "(.*?)" *$/m';
$str = 'http 2015-05-13T23:39:43.945958Z my-loadbalancer 192.168.131.39:2817 10.0.0.1:80 0.000073 0.001048 0.000057 200 200 0 29 "GET http://www. example.com:80/index HTTP/1.1" "curl/7.38.0" - - arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067 " Root=1-58337262-36d228ad5d99923122bbe354"';
preg_match_all($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