php程序运行时出现：Fatal error: Call to undefined function bcompiler_write_header() 错误，怎么解决。谢谢。代码如下：
$fh = fopen($this->targetPaths[$key].'encrypt.php', "w");
bcompiler_write_header($fh);
bcompiler_write_file($fh, $this->targetPaths[$key]);
bcompiler_write_footer($fh);
fclose($fh);
php
function
------解决方案--------------------
安装 bcompiler 扩展 ：http://pecl.php.net/package/bcompiler
------解决方案--------------------
需要安装 http://www.php.net/manual/en/book.bcompiler.php
安装方式：http://www.php.net/manual/en/bcompiler.installation.php