php获取系统当前路径与检查php配置参数-PHP源码

php 获取系统当前路径与检查php配置参数
function getPath($mainpath, $relativepath) {
global $dir;
$mainpath_info = explode('/', $mainpath);
$relativepath_info = explode('/', $relativepath);
$relativepath_info_count = count($relativepath_info);
for ($i=0; $i<$relativepath_info_count; $i++) {
if ($relativepath_info[$i] == '.' || $relativepath_info[$i] == '') continue;
if ($relativepath_info[$i] == '..') {
$mainpath_info_count = count($mainpath_info);
unset($mainpath_info[$mainpath_info_count-1]);
continue;
}
$mainpath_info[count($mainpath_info)] = $relativepath_info[$i];
} //end for
return implode('/', $mainpath_info);
}

// 检查PHP配置参数
function getphpcfg($varname) {
switch($result = get_cfg_var($varname)) {
case 0:
return "No";
break;
case 1:
return "Yes";
break;
default:
return $result;
break;
}
}