Call to undefined function bcompiler_write_header() 错误怎么解决?

php function 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);

回复讨论(解决方案)

安装 bcompiler 扩展 ：http://pecl.php.net/package/bcompiler

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