* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace SebastianBergmann\GlobalState; use const PHP_EOL; use function is_array; use function is_scalar; use function serialize; use function sprintf; use function var_export; final class CodeExporter { public function constants(Snapshot $snapshot): string { $result = ''; foreach ($snapshot->constants() as $name => $value) { $result .= sprintf( 'if (!defined(\'%s\')) define(\'%s\', %s);' . "\n", $name, $name, $this->exportVariable($value), ); } return $result; } public function globalVariables(Snapshot $snapshot): string { $result = <<<'EOT' call_user_func( function () { foreach (array_keys($GLOBALS) as $key) { unset($GLOBALS[$key]); } } ); EOT; foreach ($snapshot->globalVariables() as $name => $value) { $result .= sprintf( '$GLOBALS[%s] = %s;' . PHP_EOL, $this->exportVariable($name), $this->exportVariable($value), ); } return $result; } public function iniSettings(Snapshot $snapshot): string { $result = ''; foreach ($snapshot->iniSettings() as $key => $value) { $result .= sprintf( '@ini_set(%s, %s);' . "\n", $this->exportVariable($key), $this->exportVariable($value), ); } return $result; } private function exportVariable(mixed $variable): string { if (is_scalar($variable) || null === $variable || (is_array($variable) && $this->arrayOnlyContainsScalars($variable))) { return var_export($variable, true); } return 'unserialize(' . var_export(serialize($variable), true) . ')'; } private function arrayOnlyContainsScalars(array $array): bool { $result = true; foreach ($array as $element) { if (is_array($element)) { $result = $this->arrayOnlyContainsScalars($element); } elseif (!is_scalar($element) && null !== $element) { $result = false; } if ($result === false) { break; } } return $result; } }