$re = '`(?i)(password["\',=]+)[^"\',]+(["\',]*)`m';
$str = '{
"Env": [
"RELEASE_CHANNEL=stable",
"PASSWORD=qwerty!@#$%*^&()-_=+~<>.:;?/\\|QWERTY",
"LOG_LEVEL=info",
"NODENAME=mynode",
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
],
}
';
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