Replaced existing PHP files with more batch-based implementation
diff --git a/src/php/lib/Grpc/AbstractCall.php b/src/php/lib/Grpc/AbstractCall.php
new file mode 100644
index 0000000..b813d16
--- /dev/null
+++ b/src/php/lib/Grpc/AbstractCall.php
@@ -0,0 +1,79 @@
+<?php
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+namespace Grpc;
+
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
+
+abstract class AbstractCall {
+
+  protected $call;
+  protected $deserialize;
+  protected $metadata;
+
+  /**
+   * Create a new Call wrapper object.
+   * @param Channel $channel The channel to communicate on
+   * @param string $method The method to call on the remote server
+   */
+  public function __construct(Channel $channel, $method, $deserialize) {
+    $this->call = new Call($channel, $method, Timeval::inf_future());
+    $this->deserialize = $deserialize;
+  }
+
+  /**
+   * @return The metadata sent by the server.
+   */
+  public function getMetadata() {
+    return $this->metadata;
+  }
+
+  /**
+   * Cancels the call
+   */
+  public function cancel() {
+    $this->call->cancel();
+  }
+
+  /**
+   * Deserialize a response value to an object.
+   * @param string $value The binary value to deserialize
+   * @return The deserialized value
+   */
+  protected function deserializeResponse($value) {
+    if ($value === null) {
+      return null;
+    }
+    return call_user_func($this->deserialize, $value);
+  }
+}
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