Added getPbString() method to retrieve the PB file contents directly.

UnitTest.php

@@ -148,20 +148,22 @@ public function testUsage() {
 
          # Serialize the data to a .pb format.
         $tmp = dirname(__FILE__) . '/addressbook.pb';
-		$outfp = fopen($tmp, 'wb');
-
+				$outfp = fopen($tmp, 'wb');
         $book->write($outfp);
         fclose($outfp);
 
         $this->assertTrue(filesize($tmp) > 0);
 
+				// check that the string output is correct
+				$string = $book->getPbString();
+				$this->assertEquals($string,file_get_contents($tmp));
 
         // Read it into a new addressbook
         $infp = fopen($tmp, 'rb');
         $newBook = new Unit_Test_AddressBook($infp);
-		fclose($infp);
+				fclose($infp);
 
-		unlink($tmp);
+				unlink($tmp);
 
         # Re-run some tests on the new book to ensure things match.
         $this->assertEquals(4,$newBook->getPersonCount());
@@ -176,7 +178,9 @@ public function testUsage() {
         $this->assertEquals($book->getPerson(3)->getPhone(0)->getType(),$newBook->getPerson(3)->getPhone(0)->getType());
         $this->assertEquals($book->getPerson(3)->getPhone(1)->getNumber(),$newBook->getPerson(3)->getPhone(1)->getNumber());
         $this->assertEquals($book->getPerson(3)->getPhone(1)->getType(),$newBook->getPerson(3)->getPhone(1)->getType());
-
+
+
+
     }
 
 

protoc-gen-php.cc

@@ -603,6 +603,23 @@ void PHPCodeGenerator::PrintMessageWrite(io::Printer &printer, const Descriptor
 
 	printer.Outdent();
 	printer.Print("}\n");
+
+	// Write
+	printer.Print(
+		"\n"
+		"function getPbString() {\n"
+	);
+	printer.Indent();
+
+	printer.Print("$fp = fopen('php://memory', 'w+b');\n");
+	printer.Print("$this->write($fp);\n");
+	printer.Print("rewind($fp);\n");
+	printer.Print("$out = stream_get_contents($fp);\n");
+	printer.Print("fclose($fp);\n");
+	printer.Print("return $out;\n");
+	printer.Outdent();
+	printer.Print("}\n");
+
 }
 
 void PHPCodeGenerator::PrintMessageSize(io::Printer &printer, const Descriptor & message) const {