Suppress the each() function's deprecation error

src/Util/Getopt.php

@@ -34,7 +34,7 @@ public static function getopt(array $args, $short_options, $long_options = null)
 
         reset($args);
 
-        while (list($i, $arg) = each($args)) {
+        while (list($i, $arg) = @each($args)) {
             if ($arg == '') {
                 continue;
             }
@@ -91,7 +91,7 @@ protected static function parseShortOption($arg, $short_options, &$opts, &$args)
                     if ($i + 1 < $argLen) {
                         $opts[] = [$opt, substr($arg, $i + 1)];
                         break;
-                    } elseif (list(, $opt_arg) = each($args)) {
+                    } elseif (list(, $opt_arg) = @each($args)) {
                     } else {
                         throw new PHPUnit_Framework_Exception(
                             "option requires an argument -- $opt"
@@ -136,7 +136,7 @@ protected static function parseLongOption($arg, $long_options, &$opts, &$args)
 
             if (substr($long_opt, -1) == '=') {
                 if (substr($long_opt, -2) != '==') {
-                    if (!strlen($opt_arg) && !(list(, $opt_arg) = each($args))) {
+                    if (!strlen($opt_arg) && !(list(, $opt_arg) = @each($args))) {
                         throw new PHPUnit_Framework_Exception(
                             "option --$opt requires an argument"
                         );