Add test with named parameters

Author: kocsismate

ext/standard/tests/general_functions/rand.phpt

@@ -13,10 +13,21 @@ var_dump(rand(0,3));
 
 var_dump(srand());
 var_dump(srand(-1));
+try {
+    srand(mode: MT_RAND_MT19937);
+} catch (Error $e) {
+    echo $e->getMessage() . "\n";
+}
 
 var_dump(mt_srand());
 var_dump(mt_srand(-1));
 
+try {
+    mt_srand(mode: MT_RAND_MT19937);
+} catch (Error $e) {
+    echo $e->getMessage() . "\n";
+}
+
 var_dump(getrandmax());
 
 var_dump(mt_getrandmax());
@@ -32,8 +43,10 @@ int(%i)
 int(%d)
 NULL
 NULL
+srand(): Argument #1 ($seed) must be passed explicitly, because the default value is not known
 NULL
 NULL
+mt_srand(): Argument #1 ($seed) must be passed explicitly, because the default value is not known
 int(%d)
 int(%d)
 Done