diff --git a/src/Symfony/Component/OptionsResolver/OptionsResolver.php b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
index 88c1e3c031..bd9f4f58b8 100644
--- a/src/Symfony/Component/OptionsResolver/OptionsResolver.php
+++ b/src/Symfony/Component/OptionsResolver/OptionsResolver.php
@@ -27,6 +27,26 @@ use Symfony\Component\OptionsResolver\Exception\UndefinedOptionsException;
  */
 class OptionsResolver implements Options
 {
+    private const VALIDATION_FUNCTIONS = [
+        'bool' => 'is_bool',
+        'boolean' => 'is_bool',
+        'int' => 'is_int',
+        'integer' => 'is_int',
+        'long' => 'is_int',
+        'float' => 'is_float',
+        'double' => 'is_float',
+        'real' => 'is_float',
+        'numeric' => 'is_numeric',
+        'string' => 'is_string',
+        'scalar' => 'is_scalar',
+        'array' => 'is_array',
+        'iterable' => 'is_iterable',
+        'countable' => 'is_countable',
+        'callable' => 'is_callable',
+        'object' => 'is_object',
+        'resource' => 'is_resource',
+    ];
+
     /**
      * The names of all defined options.
      */
@@ -110,12 +130,6 @@ class OptionsResolver implements Options
 
     private $parentsOptions = [];
 
-    private static $typeAliases = [
-        'boolean' => 'bool',
-        'integer' => 'int',
-        'double' => 'float',
-    ];
-
     /**
      * Sets the default value of a given option.
      *
@@ -995,8 +1009,6 @@ class OptionsResolver implements Options
             $invalidTypes = [];
 
             foreach ($this->allowedTypes[$option] as $type) {
-                $type = self::$typeAliases[$type] ?? $type;
-
                 if ($valid = $this->verifyTypes($type, $value, $invalidTypes)) {
                     break;
                 }
@@ -1007,7 +1019,7 @@ class OptionsResolver implements Options
                 $fmtAllowedTypes = implode('" or "', $this->allowedTypes[$option]);
                 $fmtProvidedTypes = implode('|', array_keys($invalidTypes));
                 $allowedContainsArrayType = \count(array_filter($this->allowedTypes[$option], static function ($item) {
-                    return '[]' === substr(self::$typeAliases[$item] ?? $item, -2);
+                    return '[]' === substr($item, -2);
                 })) > 0;
 
                 if (\is_array($value) && $allowedContainsArrayType) {
@@ -1135,7 +1147,7 @@ class OptionsResolver implements Options
             return $valid;
         }
 
-        if (('null' === $type && null === $value) || (\function_exists($func = 'is_'.$type) && $func($value)) || $value instanceof $type) {
+        if (('null' === $type && null === $value) || (isset(self::VALIDATION_FUNCTIONS[$type]) ? self::VALIDATION_FUNCTIONS[$type]($value) : $value instanceof $type)) {
             return true;
         }
 
diff --git a/src/Symfony/Component/OptionsResolver/composer.json b/src/Symfony/Component/OptionsResolver/composer.json
index 4a580cb386..4c365b978a 100644
--- a/src/Symfony/Component/OptionsResolver/composer.json
+++ b/src/Symfony/Component/OptionsResolver/composer.json
@@ -18,6 +18,7 @@
     "require": {
         "php": "^7.2.5",
         "symfony/deprecation-contracts": "^2.1",
+        "symfony/polyfill-php73": "~1.0",
         "symfony/polyfill-php80": "^1.15"
     },
     "autoload": {
diff --git a/src/Symfony/Component/Validator/Constraints/TypeValidator.php b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
index 99f3d9c630..0a938c6d95 100644
--- a/src/Symfony/Component/Validator/Constraints/TypeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/TypeValidator.php
@@ -20,6 +20,38 @@ use Symfony\Component\Validator\Exception\UnexpectedTypeException;
  */
 class TypeValidator extends ConstraintValidator
 {
+    private const VALIDATION_FUNCTIONS = [
+        'bool' => 'is_bool',
+        'boolean' => 'is_bool',
+        'int' => 'is_int',
+        'integer' => 'is_int',
+        'long' => 'is_int',
+        'float' => 'is_float',
+        'double' => 'is_float',
+        'real' => 'is_float',
+        'numeric' => 'is_numeric',
+        'string' => 'is_string',
+        'scalar' => 'is_scalar',
+        'array' => 'is_array',
+        'iterable' => 'is_iterable',
+        'countable' => 'is_countable',
+        'callable' => 'is_callable',
+        'object' => 'is_object',
+        'resource' => 'is_resource',
+        'null' => 'is_null',
+        'alnum' => 'ctype_alnum',
+        'alpha' => 'ctype_alpha',
+        'cntrl' => 'ctype_cntrl',
+        'digit' => 'ctype_digit',
+        'graph' => 'ctype_graph',
+        'lower' => 'ctype_lower',
+        'print' => 'ctype_print',
+        'punct' => 'ctype_punct',
+        'space' => 'ctype_space',
+        'upper' => 'ctype_upper',
+        'xdigit' => 'ctype_xdigit',
+    ];
+
     /**
      * {@inheritdoc}
      */
@@ -37,14 +69,11 @@ class TypeValidator extends ConstraintValidator
 
         foreach ($types as $type) {
             $type = strtolower($type);
-            $type = 'boolean' === $type ? 'bool' : $type;
-            $isFunction = 'is_'.$type;
-            $ctypeFunction = 'ctype_'.$type;
-            if (\function_exists($isFunction) && $isFunction($value)) {
+            if (isset(self::VALIDATION_FUNCTIONS[$type]) && self::VALIDATION_FUNCTIONS[$type]($value)) {
                 return;
-            } elseif (\function_exists($ctypeFunction) && $ctypeFunction($value)) {
-                return;
-            } elseif ($value instanceof $type) {
+            }
+
+            if ($value instanceof $type) {
                 return;
             }
         }
diff --git a/src/Symfony/Component/Validator/composer.json b/src/Symfony/Component/Validator/composer.json
index 0ed2945d3c..6938592775 100644
--- a/src/Symfony/Component/Validator/composer.json
+++ b/src/Symfony/Component/Validator/composer.json
@@ -19,6 +19,7 @@
         "php": "^7.2.5",
         "symfony/polyfill-ctype": "~1.8",
         "symfony/polyfill-mbstring": "~1.0",
+        "symfony/polyfill-php73": "~1.0",
         "symfony/polyfill-php80": "^1.15",
         "symfony/translation-contracts": "^1.1|^2"
     },