Add sample code to indentation

Author: zonuexe

tests/indent/issue-623.php

@@ -0,0 +1,17 @@
+<?php
+
+$object = new DateTime();
+
+$object->something()
+    ->something(); // ###php-mode-test### ((indent 4))
+
+var_dump(
+    $object->something() // ###php-mode-test### ((indent 4))
+        ->something(), // ###php-mode-test### ((indent 8))
+); // ###php-mode-test### ((indent 0))
+
+$arr = [
+    $object->something() // ###php-mode-test### ((indent 4))
+    /* comment */ ->something() // ###php-mode-test### ((indent 4))
+        ->something(), // ###php-mode-test### ((indent 8))
+]; // ###php-mode-test### ((indent 0))

tests/php-mode-test.el

@@ -645,6 +645,10 @@ Meant for `php-mode-test-issue-503'."
     (goto-char (point-min))
     (should (eq (php-mode-test-in-function-p nil) nil))))
 
+(ert-deftest php-mode-test-issue-623 ()
+  "Proper alignment object -> accessor."
+  (with-php-mode-test ("indent/issue-623.php" :indent t :magic t)))
+
 (ert-deftest php-mode-test-php74 ()
   "Test highlighting language constructs added in PHP 7.4."
   (with-php-mode-test ("7.4/arrow-function.php" :faces t))