diff --git a/src/php/bin/run_tests.sh b/src/php/bin/run_tests.sh
index 60ce4775eb4..bcf8954bc39 100755
--- a/src/php/bin/run_tests.sh
+++ b/src/php/bin/run_tests.sh
@@ -38,22 +38,3 @@ if [[ "$SKIP_PERSISTENT_CHANNEL_TESTS" != "true" ]]; then
    $(which php) $extension_dir -d max_execution_time=300 $(which phpunit) -v --debug \
      ../tests/unit_tests/PersistentChannelTests
 fi
-
-export ZEND_DONT_UNLOAD_MODULES=1
-export USE_ZEND_ALLOC=0
-# Detect whether valgrind is executable
-if [ -x "$(command -v valgrind)" ]; then
-  # skip the memory leak test on ARM64
-  # TODO(jtattermusch): reenable the test once https://github.com/grpc/grpc/issues/29098 is fixed.
-  if [ "$(uname -m)" != "aarch64" ]; then
-    $(which valgrind) --error-exitcode=10 --leak-check=yes \
-      --errors-for-leak-kinds=definite \
-      -v \
-      --num-callers=30 \
-      --suppressions=../tests/MemoryLeakTest/ignore_leaks.supp \
-      $VALGRIND_UNDEF_VALUE_ERRORS \
-      $(which php) $extension_dir -d max_execution_time=300 \
-      ../tests/MemoryLeakTest/MemoryLeakTest.php
-  fi
-fi
-
diff --git a/src/php/tests/MemoryLeakTest/MemoryLeakTest.php b/src/php/tests/MemoryLeakTest/MemoryLeakTest.php
deleted file mode 100644
index e6124f54f18..00000000000
--- a/src/php/tests/MemoryLeakTest/MemoryLeakTest.php
+++ /dev/null
@@ -1,78 +0,0 @@
-<?php
-/*
- *
- * Copyright 2015 gRPC authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- */
-
-//==============Channel Test====================
-
-function callbackFunc($context)
-{
-  return [];
-}
-
-function callbackFunc2($context)
-{
-  return ["k1" => "v1"];
-}
-
-function assertConnecting($state)
-{
-  assert(($state == GRPC\CHANNEL_CONNECTING || $state == GRPC\CHANNEL_TRANSIENT_FAILURE) == true);
-}
-
-function waitUntilNotIdle($channel) {
-  for ($i = 0; $i < 10; $i++) {
-    $now = Grpc\Timeval::now();
-    $deadline = $now->add(new Grpc\Timeval(10000));
-    if ($channel->watchConnectivityState(GRPC\CHANNEL_IDLE,
-      $deadline)) {
-      return true;
-    }
-  }
-  assert(true == false);
-}
-
-// Set up
-$channel = new Grpc\Channel('localhost:50101', ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
-
-// Test InsecureCredentials
-assert('Grpc\Channel' == get_class($channel));
-
-// Test ConnectivityState
-$state = $channel->getConnectivityState();
-assert(0 == $state);
-
-$channel->close();
-
-// Test GetTarget
-$channel = new Grpc\Channel('localhost:50102', ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
-$target = $channel->getTarget();
-assert(is_string($target) == true);
-$channel->close();
-
-// Test WatchConnectivityState
-$channel = new Grpc\Channel('localhost:50103', ['credentials' => Grpc\ChannelCredentials::createInsecure()]);
-$now = Grpc\Timeval::now();
-$deadline = $now->add(new Grpc\Timeval(100*1000));
-
-$state = $channel->watchConnectivityState(1, $deadline);
-assert($state == true);
-
-unset($now);
-unset($deadline);
-
-$channel->close();