Merge branch '4.2'

* 4.2: (26 commits)
  Apply php-cs-fixer rule for array_key_exists()
  [Cache] fix warming up cache.system and apcu
  [Security] Change FormAuthenticator if condition
  handles multi-byte characters in autocomplete
  speed up tests running them without debug flag
  [Translations] added missing Croatian validators
  Fix getItems() performance issue with RedisCluster (php-redis)
  [VarDumper] Keep a ref to objects to ensure their handle cannot be reused while cloning
  IntegerType: reject submitted non-integer numbers
  be keen to newcomers
  [HttpKernel] Fix possible infinite loop of exceptions
  fixed CS
  [Validator] Added missing translations for Afrikaans
  do not validate non-submitted form fields in PATCH requests
  Update usage example in ArrayInput doc block.
  [Console] Prevent ArgvInput::getFirstArgument() from returning an option value
  [Validator] Fixed duplicate UUID
  fixed CS
  [EventDispatcher] Fix unknown priority
  Avoid mutating the Finder when building the iterator
  ...

Author: nicolas-grekas

Inline.php

@@ -555,7 +555,7 @@ private static function evaluateScalar(string $scalar, int $flags, array $refere
                 throw new ParseException('A reference must contain at least one character.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
             }
 
-            if (!array_key_exists($value, $references)) {
+            if (!\array_key_exists($value, $references)) {
                 throw new ParseException(sprintf('Reference "%s" does not exist.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
             }
 

Parser.php

@@ -237,7 +237,7 @@ private function doParse(string $value, int $flags)
                     $allowOverwrite = true;
                     if (isset($values['value'][0]) && '*' === $values['value'][0]) {
                         $refName = substr(rtrim($values['value']), 1);
-                        if (!array_key_exists($refName, $this->refs)) {
+                        if (!\array_key_exists($refName, $this->refs)) {
                             if (false !== $pos = array_search($refName, $this->refsBeingParsed, true)) {
                                 throw new ParseException(sprintf('Circular reference [%s, %s] detected for reference "%s".', implode(', ', \array_slice($this->refsBeingParsed, $pos)), $refName, $refName), $this->currentLineNb + 1, $this->currentLine, $this->filename);
                             }
@@ -653,7 +653,7 @@ private function parseValue(string $value, int $flags, string $context)
                 $value = substr($value, 1);
             }
 
-            if (!array_key_exists($value, $this->refs)) {
+            if (!\array_key_exists($value, $this->refs)) {
                 if (false !== $pos = array_search($value, $this->refsBeingParsed, true)) {
                     throw new ParseException(sprintf('Circular reference [%s, %s] detected for reference "%s".', implode(', ', \array_slice($this->refsBeingParsed, $pos)), $value, $value), $this->currentLineNb + 1, $this->currentLine, $this->filename);
                 }