Update dependencies.

app/SymfonyRequirements.php

@@ -533,7 +533,7 @@ class SymfonyRequirements extends RequirementCollection
         if (extension_loaded('mbstring')) {
             $this->addPhpIniRequirement(
                 'mbstring.func_overload',
-                create_function('$cfgValue', 'return (int) $cfgValue !== 0;'),
+                create_function('$cfgValue', 'return (int) $cfgValue === 0;'),
                 true,
                 'string functions should not be overloaded',
                 'Set "<strong>mbstring.func_overload</strong>" to <strong>0</strong> in php.ini<a href="#phpini">*</a> to disable function overloading by the mbstring extension.'
@@ -590,8 +590,8 @@ class SymfonyRequirements extends RequirementCollection
 
         $this->addRecommendation(
             class_exists('DomDocument'),
-            'PHP-XML module should be installed',
-            'Install and enable the <strong>PHP-XML</strong> module.'
+            'PHP-DOM and PHP-XML modules should be installed',
+            'Install and enable the <strong>PHP-DOM</strong> and the <strong>PHP-XML</strong> modules.'
         );
 
         $this->addRecommendation(
@@ -682,10 +682,8 @@ class SymfonyRequirements extends RequirementCollection
         );
 
         if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
-            $this->addPhpIniRecommendation(
-                'realpath_cache_size',
-                create_function('$cfgValue', 'return (int) $cfgValue > 1000;'),
-                false,
+            $this->addRecommendation(
+                $this->getRealpathCacheSize() > 1000,
                 'realpath_cache_size should be above 1024 in php.ini',
                 'Set "<strong>realpath_cache_size</strong>" to e.g. "<strong>1024</strong>" in php.ini<a href="#phpini">*</a> to improve performance on windows.'
             );
@@ -714,4 +712,28 @@ class SymfonyRequirements extends RequirementCollection
             );
         }
     }
+
+    /**
+     * Loads realpath_cache_size from php.ini and converts it to int.
+     *
+     * (e.g. 16k is converted to 16384 int)
+     *
+     * @return int
+     */
+    protected function getRealpathCacheSize()
+    {
+        $size = ini_get('realpath_cache_size');
+        $size = trim($size);
+        $unit = strtolower(substr($size, -1, 1));
+        switch ($unit) {
+            case 'g':
+                return $size * 1024 * 1024 * 1024;
+            case 'm':
+                return $size * 1024 * 1024;
+            case 'k':
+                return $size * 1024;
+            default:
+                return (int) $size;
+        }
+    }
 }