$re = '/^(import|export).*({[^{}]*\n})?.*\'(?<file>.*)\'.*$/m';
$str = 'import { contextBuilder } from \'@graphql/context\';
import resolvers from \'@graphql/resolvers\';
import {
getDeviceFromHeaders,
getUserFromHeaders,
getRealIp,
} from \'@utils/headers\';
export * from \'./ChallengesAPI\';
export * from \'./HealthDataCollectorAPI\';
export * from \'./AlfredAPI\';
import { formatRoundedNumber } from \'@utils/number\';
import type {
EligibilityType,
OfferPlan,
OfferPlanQuote,
PacificOffer,
} from \'generated/graphql\';
import { formatRoundedNumber } from \'@utils/number\';
import {
formatScaledPriceByCountry,
formatScaledPriceCurrency,
} from \'@graphql/domain/plan/price\';
';
preg_match_all($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