$re = '/"([^"]*)"|(?<=,|^)([^,]*)(?=,|$)/';
$str = '45235g4tgd3453452,89789dsjfhwf897897fsd9sd,123456789-82638273-92DA5F569,2016-06-12 06:10:03,4000,"{ref_action:\'3000\',result:\'500\',pfx:\'gb\'}","{\'1000\':5,\'34567\':10}",10';
preg_match_all($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