摘要： get_include_path获取当前include_path配置选项的值，在当前代码目录未找到include文件时，则到include_path去include。set_include_path 设置默认的php include 目录require_once(PEAR.php) [function.require-once]: failed to open stream，这种情况要么是include_path不是默认路径，要么是对PEAR.php文件没有读写权限。如果是路径不对，用set_include_path 设置默认路径即可，权限不够则添加相应权限 阅读全文