diff --git a/lib/php/src/ext/thrift_protocol/php_thrift_protocol7.cpp b/lib/php/src/ext/thrift_protocol/php_thrift_protocol7.cpp
index 6d8b76f..3c6c3db 100644
--- a/lib/php/src/ext/thrift_protocol/php_thrift_protocol7.cpp
+++ b/lib/php/src/ext/thrift_protocol/php_thrift_protocol7.cpp
@@ -995,7 +995,10 @@
     transport.flush();
 
   } catch (const PHPExceptionWrapper& ex) {
-    zend_throw_exception_object(ex);
+    // ex will be destructed, so copy to a zval that zend_throw_exception_object can take ownership of
+    zval myex;
+    ZVAL_COPY(&myex, ex);
+    zend_throw_exception_object(&myex);
     RETURN_NULL();
   } catch (const std::exception& ex) {
     throw_zend_exception_from_std_exception(ex);
@@ -1053,7 +1056,11 @@
     zval* spec = zend_read_static_property(Z_OBJCE_P(return_value), "_TSPEC", sizeof("_TSPEC")-1, false);
     binary_deserialize_spec(return_value, transport, Z_ARRVAL_P(spec));
   } catch (const PHPExceptionWrapper& ex) {
-    zend_throw_exception_object(ex);
+    // ex will be destructed, so copy to a zval that zend_throw_exception_object can ownership of
+    zval myex;
+    ZVAL_COPY(&myex, ex);
+    zval_dtor(return_value);
+    zend_throw_exception_object(&myex);
     RETURN_NULL();
   } catch (const std::exception& ex) {
     throw_zend_exception_from_std_exception(ex);
diff --git a/test/php/TestClient.php b/test/php/TestClient.php
index 76fd935..1591027 100755
--- a/test/php/TestClient.php
+++ b/test/php/TestClient.php
@@ -492,6 +492,25 @@
   print_r(' caught xception '.$x->errorCode.': '.$x->message."\n");
 }
 
+// Regression test for THRIFT-4263
+print_r("testBinarySerializer_Deserialize('foo')");
+try {
+  \Thrift\Serializer\TBinarySerializer::deserialize(base64_decode('foo'), \ThriftTest\Xtruct2::class);
+  echo "**FAILED**\n";
+  $exitcode |= ERR_STRUCTS;
+} catch (\Thrift\Exception\TTransportException $happy_exception) {
+  // We expected this due to binary data of base64_decode('foo') is less then 4
+  // bytes and it tries to find thrift version number in the transport by
+  // reading i32() at the beginning.  Casting to string validates that
+  // exception is still accessible in memory and not corrupted.  Without patch,
+  // PHP will error log that the exception doesn't have any tostring method,
+  // which is a lie due to corrupted memory.
+  for($i=99; $i > 0; $i--) {
+    (string)$happy_exception;
+  }
+  print_r("  SUCCESS\n");
+}
+
 /**
  * Normal tests done.
  */