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

Constraint.php

@@ -122,7 +122,7 @@ public function __construct($options = null)
         }
         if ($options && \is_array($options) && \is_string(key($options))) {
             foreach ($options as $option => $value) {
-                if (array_key_exists($option, $knownOptions)) {
+                if (\array_key_exists($option, $knownOptions)) {
                     $this->$option = $value;
                     unset($missingOptions[$option]);
                 } else {
@@ -136,7 +136,7 @@ public function __construct($options = null)
                 throw new ConstraintDefinitionException(sprintf('No default option is configured for constraint %s', \get_class($this)));
             }
 
-            if (array_key_exists($option, $knownOptions)) {
+            if (\array_key_exists($option, $knownOptions)) {
                 $this->$option = $options;
                 unset($missingOptions[$option]);
             } else {

Constraints/CollectionValidator.php

@@ -51,7 +51,7 @@ public function validate($value, Constraint $constraint)
 
         foreach ($constraint->fields as $field => $fieldConstraint) {
             // bug fix issue #2779
-            $existsInArray = \is_array($value) && array_key_exists($field, $value);
+            $existsInArray = \is_array($value) && \array_key_exists($field, $value);
             $existsInArrayAccess = $value instanceof \ArrayAccess && $value->offsetExists($field);
 
             if ($existsInArray || $existsInArrayAccess) {

Constraints/Email.php

@@ -76,19 +76,19 @@ class Email extends Constraint
 
     public function __construct($options = null)
     {
-        if (\is_array($options) && array_key_exists('strict', $options)) {
+        if (\is_array($options) && \array_key_exists('strict', $options)) {
             @trigger_error(sprintf('The "strict" property is deprecated since Symfony 4.1. Use "mode"=>"%s" instead.', self::VALIDATION_MODE_STRICT), E_USER_DEPRECATED);
         }
 
-        if (\is_array($options) && array_key_exists('checkMX', $options)) {
+        if (\is_array($options) && \array_key_exists('checkMX', $options)) {
             @trigger_error('The "checkMX" option is deprecated since Symfony 4.2.', E_USER_DEPRECATED);
         }
 
-        if (\is_array($options) && array_key_exists('checkHost', $options)) {
+        if (\is_array($options) && \array_key_exists('checkHost', $options)) {
             @trigger_error('The "checkHost" option is deprecated since Symfony 4.2.', E_USER_DEPRECATED);
         }
 
-        if (\is_array($options) && array_key_exists('mode', $options) && !\in_array($options['mode'], self::$validationModes, true)) {
+        if (\is_array($options) && \array_key_exists('mode', $options) && !\in_array($options['mode'], self::$validationModes, true)) {
             throw new \InvalidArgumentException('The "mode" parameter value is not valid.');
         }
 

Constraints/IbanValidator.php

@@ -182,7 +182,7 @@ public function validate($value, Constraint $constraint)
         }
 
         // ...have a format available
-        if (!array_key_exists($countryCode, self::$formats)) {
+        if (!\array_key_exists($countryCode, self::$formats)) {
             $this->context->buildViolation($constraint->message)
                 ->setParameter('{{ value }}', $this->formatValue($value))
                 ->setCode(Iban::NOT_SUPPORTED_COUNTRY_CODE_ERROR)

Constraints/LessThanOrEqual.php

@@ -20,7 +20,7 @@
  */
 class LessThanOrEqual extends AbstractComparison
 {
-    const TOO_HIGH_ERROR = '079d7420-2d13-460c-8756-de810eeb37d2';
+    const TOO_HIGH_ERROR = '30fbb013-d015-4232-8b3b-8f3be97a7e14';
 
     protected static $errorNames = [
         self::TOO_HIGH_ERROR => 'TOO_HIGH_ERROR',

Constraints/Regex.php

@@ -79,7 +79,7 @@ public function getHtmlPattern()
         // Unescape the delimiter
         $pattern = str_replace('\\'.$delimiter, $delimiter, substr($this->pattern, 1, -1));
 
-        // If the pattern is inverted, we can simply wrap it in
+        // If the pattern is inverted, we can wrap it in
         // ((?!pattern).)*
         if (!$this->match) {
             return '((?!'.$pattern.').)*';

Constraints/Traverse.php

@@ -25,7 +25,7 @@ class Traverse extends Constraint
 
     public function __construct($options = null)
     {
-        if (\is_array($options) && array_key_exists('groups', $options)) {
+        if (\is_array($options) && \array_key_exists('groups', $options)) {
             throw new ConstraintDefinitionException(sprintf('The option "groups" is not supported by the constraint %s', __CLASS__));
         }
 

Constraints/Url.php

@@ -109,10 +109,10 @@ class Url extends Constraint
     public function __construct($options = null)
     {
         if (\is_array($options)) {
-            if (array_key_exists('checkDNS', $options)) {
+            if (\array_key_exists('checkDNS', $options)) {
                 @trigger_error(sprintf('The "checkDNS" option in "%s" is deprecated since Symfony 4.1. Its false-positive rate is too high to be relied upon.', self::class), E_USER_DEPRECATED);
             }
-            if (array_key_exists('dnsMessage', $options)) {
+            if (\array_key_exists('dnsMessage', $options)) {
                 @trigger_error(sprintf('The "dnsMessage" option in "%s" is deprecated since Symfony 4.1.', self::class), E_USER_DEPRECATED);
             }
         }

Mapping/ClassMetadata.php

@@ -366,7 +366,7 @@ public function mergeConstraints(self $source)
      */
     public function hasPropertyMetadata($property)
     {
-        return array_key_exists($property, $this->members);
+        return \array_key_exists($property, $this->members);
     }
 
     /**

Mapping/ClassMetadataInterface.php

@@ -86,8 +86,8 @@ public function hasPropertyMetadata($property);
     /**
      * Returns all metadata instances for the given named property.
      *
-     * If your implementation does not support properties, simply throw an
-     * exception in this method (for example a <tt>BadMethodCallException</tt>).
+     * If your implementation does not support properties, throw an exception
+     * in this method (for example a <tt>BadMethodCallException</tt>).
      *
      * @param string $property The property name
      *