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<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\VarExporter; use Symfony\Component\VarExporter\Exception\ExceptionInterface; use Symfony\Component\VarExporter\Internal\Exporter; use Symfony\Component\VarExporter\Internal\Hydrator; use Symfony\Component\VarExporter\Internal\Registry; use Symfony\Component\VarExporter\Internal\Values; /** * Exports serializable PHP values to PHP code. * * VarExporter allows serializing PHP data structures to plain PHP code (like var_export()) * while preserving all the semantics associated with serialize() (unlike var_export()). * * By leveraging OPcache, the generated PHP code is faster than doing the same with unserialize(). * * @author Nicolas Grekas <p@tchwork.com> */ final class VarExporter { /** * Exports a serializable PHP value to PHP code. * * @param mixed $value The value to export * @param bool &$isStaticValue Set to true after execution if the provided value is static, false otherwise * * @return string The value exported as PHP code * * @throws ExceptionInterface When the provided value cannot be serialized */ public static function export($value, bool &$isStaticValue = null): string { $isStaticValue = true; if (!\is_object($value) && !(\is_array($value) && $value) && !$value instanceof \__PHP_Incomplete_Class && !\is_resource($value)) { return Exporter::export($value); } $objectsPool = new \SplObjectStorage(); $refsPool = []; $objectsCount = 0; try { $value = Exporter::prepare([$value], $objectsPool, $refsPool, $objectsCount, $isStaticValue)[0]; } finally { $references = []; foreach ($refsPool as $i => $v) { if ($v[0]->count) { $references[1 + $i] = $v[2]; } $v[0] = $v[1]; } } if ($isStaticValue) { return Exporter::export($value); } $classes = []; $values = []; $states = []; foreach ($objectsPool as $i => $v) { list(, $classes[], $values[], $wakeup) = $objectsPool[$v]; if (0 < $wakeup) { $states[$wakeup] = $i; } elseif (0 > $wakeup) { $states[-$wakeup] = [$i, array_pop($values)]; $values[] = []; } } ksort($states); $wakeups = [null]; foreach ($states as $k => $v) { if (\is_array($v)) { $wakeups[-$v[0]] = $v[1]; } else { $wakeups[] = $v; } } if (null === $wakeups[0]) { unset($wakeups[0]); } $properties = []; foreach ($values as $i => $vars) { foreach ($vars as $class => $values) { foreach ($values as $name => $v) { $properties[$class][$name][$i] = $v; } } } if ($classes || $references) { $value = new Hydrator(new Registry($classes), $references ? new Values($references) : null, $properties, $value, $wakeups); } else { $isStaticValue = true; } return Exporter::export($value); } }