httpd cpu 100%
解决:lsof -p cpu高的httpd进程的pid,查看cwd(current working directory),
more /dev/shm/session_.. 查看当前问题httpd的php变量
strace -p pid -c 查看system call和user call的比例,如果system call的比例很高,很可能出现死循环
定位到问题php程序目录(/yd/nbsw/news/),检查php和js代码,发现问题如下
在function.php中的function sccl($content)
function sccl($content)
{
while (((stripos($content,'
')!==false)?true:false)||((stripos($content,'
')!==false)?true:false)||((stripos($content,'
')!==false)?true:false))
{
if(function_exists(str_ireplace)) //当前php为版本5,所以引入了str_ireplace
{
$content=str_ireplace('
','',$content); //if中并不存在关于'
'的replace,导致可能出现死循环,建议增加'
'的str_ireplace
$content=str_ireplace('
','',$content);
$content=str_ireplace('
','',$content);
}else
{
$content=str_replace('
','',$content);
$content=str_replace('
','',$content);
$content=str_replace('
','',$content);
$content=str_replace('
','',$content);
$content=str_replace('
','',$content);
$content=str_replace('
','',$content);
}
}
return preg_replace("/
}
location.php中的function getLocation()
function getLocation()
{
global $conn_ro,$location_cat_id;
$sql='select name,link,parent_id,depth from cat where cat_id=:cat_id';
$stat=$conn_ro->prepare($sql);
$stat->bindParam(":cat_id",$location_cat_id);
$stat->execute();
$temp=$stat->fetch();
$cat_id=$location_cat_id;
$parent_id=$temp['parent_id'];
$location=array();
$location[]=array('cat_id'=>$cat_id,'name'=>$temp['name'],'link'=>$temp['link'],'depth'=>$temp['depth']);
while($parent_id!=0)
{
$sql="select cat_id,name,parent_id,link,depth from cat where cat_id=$parent_id"; //代码本身没问题,建议检查表数据是否存在parent_id为0的数据,或者default value就是0
$stat=$conn_ro->query($sql);
$temp=$stat->fetch();
$parent_id=$temp['parent_id'];
$location[]=array('cat_id'=>$temp['cat_id'],'name'=>$temp['name'],'link'=>$temp['link'],'depth'=>$temp['depth']);
}
return $location;
}
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