在C语言中用zlib压缩的数据，如何用php解压缩呢？

[辉歌]

#include "StdAfx.h"
#include ".\zip.h"

CZip::CZip(void)
: m_pZlibStream(NULL)
, m_ulTotalZipLen(0)
, m_bCompress(true)
{
}

CZip::~CZip(void)
{
	if(m_pZlibStream)
	{
		deflateEnd(m_pZlibStream);
		delete m_pZlibStream;
		m_pZlibStream = NULL;
	}
}

unsigned long CZip::ZipData(const unsigned char* pUnZipData, unsigned long ulUnZipLen, unsigned char** ppZipData)
{
	if(pUnZipData == NULL || ulUnZipLen == 0)
	{
		return 0;
	}

	unsigned long ulZipLen = 0;
	do
	{
		if(m_bCompress == false)
		{
			break;
		}
		if(ulUnZipLen < ENCODE_ZLIB_MIN_COMP_SIZE)
		{
			break;
		}
		*ppZipData = new unsigned char[ulUnZipLen + 301];
		if(*ppZipData == NULL)
		{
			break;
		}
		ulZipLen = ulUnZipLen + 300;
		int Ret = Zip(pUnZipData,ulUnZipLen,*ppZipData + 1,ulZipLen);
		if(Ret != Z_OK)
		{
			delete []*ppZipData;
			ulZipLen = 0;
			break;
		}

		*(unsigned char*)*ppZipData = ZIP_TYPE_ZLIB;
		ulZipLen += 1;
		return ulZipLen;

	}while(0);

	*ppZipData = new unsigned char[ulUnZipLen + 1];
	if(*ppZipData)
	{
		*(unsigned char*)*ppZipData = ZIP_TYPE_NONE;
		memcpy(*ppZipData + 1,pUnZipData,ulUnZipLen);
		ulZipLen = ulUnZipLen + 1;
	}
	return ulZipLen;
}

int CZip::Zip(const unsigned char* pUnZipData, unsigned long ulUnZipLen, unsigned char* pZipData, unsigned long& ulZipLen)
{
  	int err = Z_DATA_ERROR;
	if (m_pZlibStream == NULL)
	{
		m_pZlibStream = new z_stream;
		// Initialise stream values
		m_pZlibStream->zalloc = (alloc_func)0;
		m_pZlibStream->zfree = (free_func)0;
		m_pZlibStream->opaque = (voidpf)0;

		// Initialise the z_stream
		err = deflateInit(m_pZlibStream,9);
		if (err != Z_OK)
		{
			return err;
		}
		m_ulTotalZipLen = 0;
	}
	// Use whatever input is provided
	m_pZlibStream->next_in = const_cast<Bytef*>(pUnZipData);
	m_pZlibStream->avail_in = ulUnZipLen;
	m_pZlibStream->next_out = pZipData;
	m_pZlibStream->avail_out = ulZipLen;
	// Try to unzip the data
	err = deflate(m_pZlibStream, Z_SYNC_FLUSH);    
	if ((err == Z_OK) && (m_pZlibStream->avail_in == 0))
	{
		// All available input has been processed, everything ok.
		// Set the size to the amount unzipped in this call (including all recursive calls)
		ulZipLen = (m_pZlibStream->total_out - m_ulTotalZipLen);
		m_ulTotalZipLen = m_pZlibStream->total_out;
	}

	if (err != Z_OK)
		ulZipLen = 0;
	return err;
}

void CZip::EnableCompress(bool bEnable)
{
	m_bCompress = bEnable;
}

源代码如上。使用接口为unsigned long CZip::ZipData(const unsigned char* pUnZipData, unsigned long ulUnZipLen, unsigned char** ppZipData)
现在想把这个函数压缩的数据在php里解压缩。如何处理呢？