Add test for no offset in read op

Author: Girgias

Zend/tests/offsets/appending_containers_in_read.phpt

@@ -0,0 +1,67 @@
+--TEST--
+Appending containers via a read operation $c[][5] = $v;
+--FILE--
+<?php
+
+require_once __DIR__ . DIRECTORY_SEPARATOR . 'test_offset_helpers.inc';
+
+foreach ($containers as $container) {
+    try {
+        $container[][5] = 'value';
+        var_dump($container);
+    } catch (\Throwable $e) {
+        echo $e::class, ': ', $e->getMessage(), "\n";
+    }
+}
+
+?>
+--EXPECTF--
+array(1) {
+  [0]=>
+  array(1) {
+    [5]=>
+    string(5) "value"
+  }
+}
+
+Deprecated: Automatic conversion of false to array is deprecated in %s on line %d
+array(1) {
+  [0]=>
+  array(1) {
+    [5]=>
+    string(5) "value"
+  }
+}
+Error: Cannot use a scalar value as an array
+Error: Cannot use a scalar value as an array
+Error: Cannot use a scalar value as an array
+Error: [] operator not supported for strings
+Error: [] operator not supported for strings
+Error: [] operator not supported for strings
+array(1) {
+  [0]=>
+  array(1) {
+    [5]=>
+    string(5) "value"
+  }
+}
+Error: Cannot use a scalar value as an array
+Error: Cannot use object of type stdClass as array
+
+Notice: Indirect modification of overloaded element of ArrayObject has no effect in %s on line %d
+object(ArrayObject)#2 (1) {
+  ["storage":"ArrayObject":private]=>
+  array(0) {
+  }
+}
+string(12) "A::offsetGet"
+NULL
+
+Notice: Indirect modification of overloaded element of A has no effect in %s on line %d
+
+Warning: Only the first byte will be assigned to the string offset in %s on line %d
+object(A)#3 (0) {
+}
+
+Notice: Indirect modification of overloaded element of B has no effect in %s on line %d
+ArgumentCountError: B::offsetGet(): Argument #1 ($offset) not passed