Swift_ByteStream_ArrayByteStream::write PHP Method

    public function write($bytes)
    {
        $to_add = str_split($bytes);
        foreach ($to_add as $value) {
            $this->_array[] = $value;
        }
        $this->_arraySize = count($this->_array);
        foreach ($this->_mirrors as $stream) {
            $stream->write($bytes);
        }
    }

 public function testEncodingAndDecodingSamples()
 {
     $sampleFp = opendir($this->_samplesDir);
     while (false !== ($encodingDir = readdir($sampleFp))) {
         if (substr($encodingDir, 0, 1) == '.') {
             continue;
         }
         $sampleDir = $this->_samplesDir . '/' . $encodingDir;
         if (is_dir($sampleDir)) {
             $fileFp = opendir($sampleDir);
             while (false !== ($sampleFile = readdir($fileFp))) {
                 if (substr($sampleFile, 0, 1) == '.') {
                     continue;
                 }
                 $text = file_get_contents($sampleDir . '/' . $sampleFile);
                 $os = new Swift_ByteStream_ArrayByteStream();
                 $os->write($text);
                 $is = new Swift_ByteStream_ArrayByteStream();
                 $this->_encoder->encodeByteStream($os, $is);
                 $encoded = '';
                 while (false !== ($bytes = $is->read(8192))) {
                     $encoded .= $bytes;
                 }
                 $this->assertEquals(quoted_printable_decode($encoded), preg_replace('~\\r(?!\\n)|(?<!\\r)\\n~', "\r\n", $text), '%s: Encoded string should decode back to original string for sample ' . $sampleDir . '/' . $sampleFile);
             }
             closedir($fileFp);
         }
     }
     closedir($sampleFp);
 }