fix bug #53432 (Assignment via string index access on an empty string converts to array)

Zend/tests/indexing_bool_to_array.phpt

@@ -0,0 +1,60 @@
+--TEST--
+Indexing -- Convert boolean variable to array
+--FILE--
+<?php
+$value = array(1);
+require 'indexing_testing.inc';
+
+run_test(true, $value, true);
+run_test(false, $value, true);
+
+run_test_ref(true, $value, true);
+run_test_ref(false, $value, true);
+
+run_test(true, $value, false);
+run_test(false, $value, false);
+
+run_test_ref(true, $value, false);
+run_test_ref(false, $value, false);
+
+?>
+--EXPECTF--
+Warning: Cannot use a scalar value as an array in %s on line %d
+bool(true)
+array(1) {
+  ["foo"]=>
+  array(1) {
+    [0]=>
+    int(1)
+  }
+}
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+bool(true)
+array(1) {
+  ["foo"]=>
+  &array(1) {
+    [0]=>
+    int(1)
+  }
+}
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+bool(true)
+array(1) {
+  [0]=>
+  array(1) {
+    [0]=>
+    int(1)
+  }
+}
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+bool(true)
+array(1) {
+  [0]=>
+  &array(1) {
+    [0]=>
+    int(1)
+  }
+}

Zend/tests/indexing_float_to_array.phpt

@@ -0,0 +1,26 @@
+--TEST--
+Indexing -- Convert float variable to array
+--FILE--
+<?php
+require 'indexing_testing.inc';
+$value = array(1);
+
+run_test(0.1, $value, true, false);
+run_test(0.1, $value, true, true);
+
+run_test(0.1, $value, false, false);
+run_test(0.1, $value, false, true);
+
+?>
+--EXPECTF--
+Warning: Cannot use a scalar value as an array in %s on line %d
+float(0.1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+float(0.1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+float(0.1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+float(0.1)

Zend/tests/indexing_integer_to_array.phpt

@@ -0,0 +1,44 @@
+--TEST--
+Indexing -- Convert integer variable to array
+--FILE--
+<?php
+require 'indexing_testing.inc';
+$value = array(1);
+
+run_test(1, $value, true);
+run_test(0, $value, true);
+
+run_test_ref(1, $value, true);
+run_test_ref(0, $value, true);
+
+run_test(1, $value, false);
+run_test(0, $value, false);
+
+run_test_ref(1, $value, false);
+run_test_ref(0, $value, false);
+
+?>
+--EXPECTF--
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(0)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(0)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(0)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(1)
+
+Warning: Cannot use a scalar value as an array in %s on line %d
+int(0)

Zend/tests/indexing_null_to_array.phpt

@@ -0,0 +1,45 @@
+--TEST--
+Indexing -- Convert null to array
+--FILE--
+<?php
+require 'indexing_testing.inc';
+$value = array(1);
+
+run_test(null, $value, true);
+
+run_test_ref(null, $value, true);
+
+run_test(null, $value, false);
+
+run_test_ref(null, $value, false);
+
+?>
+--EXPECTF--
+array(1) {
+  ["foo"]=>
+  array(1) {
+    [0]=>
+    int(1)
+  }
+}
+array(1) {
+  ["foo"]=>
+  &array(1) {
+    [0]=>
+    int(1)
+  }
+}
+array(1) {
+  [0]=>
+  array(1) {
+    [0]=>
+    int(1)
+  }
+}
+array(1) {
+  [0]=>
+  &array(1) {
+    [0]=>
+    int(1)
+  }
+}