+<?php
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Converter\Functions;
+
+use Drupal\drupalmoduleupgrader\TargetInterface;
+use Pharborist\Functions\FunctionCallNode;
+
+/**
+ * @Converter(
+ * id = "drupal_map_assoc",
+ * description = @Translation("Rewrites calls to drupal_map_assoc().")
+ * )
+ */
+class DrupalMapAssoc extends FunctionCallModifier {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function rewrite(FunctionCallNode $call, TargetInterface $target) {
+ // Change function name to array_combine().
+ $call->setName('array_combine');
+
+ // Duplicate the first $array argument twice (silly, but true).
+ // Need to clone the argument to make a copy of it, since Pharborist works
+ // on original tree elements.
+ $arguments = $call->getArguments();
+ return $call->appendArgument(clone $arguments[0]);
+ }
+
+}