Fix internal error

src/Type/Php/RegexArrayShapeMatcher.php

@@ -157,7 +157,7 @@ private function matchRegex(string $regex, ?int $flags, TrinaryLogic $wasMatched
  if (!$this->containsUnmatchedAsNull($flags, $matchesAll)) {
  // positive match has a subject but not any capturing group
  $combiType = TypeCombinator::union(
- new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [0], [], true),
+ new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [1], [], true),
  $combiType,
  );
  }
@@ -222,7 +222,7 @@ private function matchRegex(string $regex, ?int $flags, TrinaryLogic $wasMatched
  )
  ) {
  // positive match has a subject but not any capturing group
- $combiTypes[] = new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [0], [], true);
+ $combiTypes[] = new ConstantArrayType([new ConstantIntegerType(0)], [$this->createSubjectValueType($flags, $matchesAll)], [1], [], true);
  }
 
  return TypeCombinator::union(...$combiTypes);

tests/PHPStan/Analyser/AnalyserIntegrationTest.php

@@ -312,6 +312,12 @@ public function testBug3309(): void
  $this->assertNoErrors($errors);
  }
 
+ public function testBug11649(): void
+ {
+ $errors = $this->runAnalyse(__DIR__ . '/data/bug-11649.php');
+ $this->assertNoErrors($errors);
+ }
+
  public function testBug6872(): void
  {
  if (PHP_VERSION_ID < 80000) {

tests/PHPStan/Analyser/data/bug-11649.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Bug11649;
+
+use DateTime;
+
+class Date
+{
+ /**
+ * Characters used in formats accepted by date()
+ */
+ protected const DATE_FORMAT_CHARACTERS = 'AaBcDdeFgGHhIijlLMmnNoOpPrsSTtUuvWwyYzZ';
+
+ /**
+ * Regex used to parse formats accepted by date()
+ */
+ protected const DATE_FORMAT_REGEX = '/(?P<escaped>(?:\\\[A-Za-z])+)|[' . self::DATE_FORMAT_CHARACTERS . ']|(?P<invalid>[A-Za-z])/';
+
+ /**
+ * Formats a DateTime object using the current translation for weekdays and months
+ * @param mixed $translation
+ */
+ public static function formatDateTime(DateTime $dateTime, string $format, ?string $language , $translation): ?string
+ {
+ return preg_replace_callback(
+ self::DATE_FORMAT_REGEX,
+ fn(array $matches): string => match ($matches[0]) {
+ 'M' => $translation->getStrings('date.months.short')[$dateTime->format('n') - 1],
+ 'F' => $translation->getStrings('date.months.long')[$dateTime->format('n') - 1],
+ 'D' => $translation->getStrings('date.weekdays.short')[(int) $dateTime->format('w')],
+ 'l' => $translation->getStrings('date.weekdays.long')[(int) $dateTime->format('w')],
+ 'r' => static::formatDateTime($dateTime, DateTime::RFC2822, null, $translation),
+ default => $dateTime->format($matches[1] ?? $matches[0])
+ },
+ $format
+ );
+ }
+}