PHP内存垃圾回收 [英] PHP memory garbage collection
问题描述
嗨！
我有一个使用大量内存的脚本和一个具有内存限制的ISP
设置为10 Mb。剧本当然没有完成。 :(
程序相当简单 - 它将XML解析为一个数组，然后启动
将数据插入数据库的循环。如果我使用的话非常大的XML
文件然后PHP在循环内崩溃（致命错误：允许的内存大小
的10485760字节耗尽） - 表明问题出在循环中
某处。
我可以追踪PHP脚本的内存消耗，这样我就可以确定内存浪费在哪里吗？
如果PHP使用所有内存（并且没有任何内容）直到脚本结束
那么这可能是问题 - 我有什么方法可以强迫它做
垃圾回收？
任何关于PHP如何使用内存的评论都会受到赞赏 - 我真的会感到好意，因为
讨厌不得不打破将脚本分成小块（或更换ISP为
，重要的是:)）。
谢谢！
安泽
Hi!
I have a script that uses a lot of memory and an ISP that has memory-limit
set to 10 Mb. The script of course doesn''t finish running. :(
The program is rather simple - it parses XML into an array and then starts
the loop that inserts data into the database. If I use a very large XML
file then the PHP crashes inside the loop (Fatal error: Allowed memory size
of 10485760 bytes exhausted) - indicating that the problem lies within loop
somewhere.
Can I trace memory consumption of a PHP script so I can determine where the
memory is wasted?
If PHP uses all the memory (and frees nothing) until the end of the script
then that could be the problem - is there any way I can force it to do
garbage collection?
Any comment on how PHP uses memory would be appreciated - I would really
hate to have to break the script into smaller pieces (or change ISP for
that matter :) ).
Thanks!
Anze
推荐答案
任何人？请？我真的需要解决这个问题...
有没有办法测量当前的内存消耗？
问候，
< br $> b $ b anze
Anze写道：
Anybody? Please? I really need to solve this...
Is there a way to measure current memory consumption?
Regards,
Anze
Anze wrote:
嗨！
我有一个脚本，它使用了很多内存和ISP的内存限制设置为10 Mb。剧本当然没有完成。 :(
程序相当简单 - 它将XML解析为数组，然后启动将数据插入数据库的循环。如果我使用非常大的XML
文件然后PHP在循环内崩溃（致命错误：允许的内存大小为10485760字节耗尽） - 表明问题在于某个地方的循环内部。
我可以跟踪内存消耗一个PHP脚本，所以我可以确定内存浪费的位置？
如果PHP使用所有内存（并且没有任何内容）直到脚本结束
那么那可能是问题 - 有什么方法可以强迫它做垃圾收集吗？
关于PHP如何使用内存的任何评论都会受到赞赏 - 我真的很想
讨厌将脚本分解成更小的部分（或更改ISP以获得重要的事情:)）。
谢谢！
Anze
Hi!
I have a script that uses a lot of memory and an ISP that has memory-limit
set to 10 Mb. The script of course doesn''t finish running. :(
The program is rather simple - it parses XML into an array and then starts
the loop that inserts data into the database. If I use a very large XML
file then the PHP crashes inside the loop (Fatal error: Allowed memory
size of 10485760 bytes exhausted) - indicating that the problem lies
within loop somewhere.
Can I trace memory consumption of a PHP script so I can determine where
the memory is wasted?
If PHP uses all the memory (and frees nothing) until the end of the script
then that could be the problem - is there any way I can force it to do
garbage collection?
Any comment on how PHP uses memory would be appreciated - I would really
hate to have to break the script into smaller pieces (or change ISP for
that matter :) ).
Thanks!
Anze
Anze写道：
任何人？请？我真的需要解决这个问题...
有没有办法测量当前的内存消耗？
问候，
Anze
Anze写道：
Anybody? Please? I really need to solve this...
Is there a way to measure current memory consumption?
Regards,
Anze
Anze wrote:
嗨！
我有一个使用大量内存的脚本和一个内存限制的ISP 设定为10 Mb。剧本当然没有完成。 :(
程序相当简单 - 它将XML解析为数组，然后启动将数据插入数据库的循环。如果我使用非常大的XML
文件然后PHP在循环内崩溃（致命错误：允许的内存大小为10485760字节耗尽） - 表明问题在于某个地方的循环内部。
我可以跟踪内存消耗一个PHP脚本，所以我可以确定内存浪费的位置？
如果PHP使用所有内存（并且没有任何内容）直到脚本结束
那么那可能是问题 - 有什么方法可以强迫它做垃圾收集吗？
关于PHP如何使用内存的任何评论都会受到赞赏 - 我真的很想
讨厌将脚本分解成更小的部分（或更改ISP以获得重要的事情:)）。
谢谢！
Anze
Hi!
I have a script that uses a lot of memory and an ISP that has memory-limit
set to 10 Mb. The script of course doesn''t finish running. :(
The program is rather simple - it parses XML into an array and then starts
the loop that inserts data into the database. If I use a very large XML
file then the PHP crashes inside the loop (Fatal error: Allowed memory
size of 10485760 bytes exhausted) - indicating that the problem lies
within loop somewhere.
Can I trace memory consumption of a PHP script so I can determine where
the memory is wasted?
If PHP uses all the memory (and frees nothing) until the end of the script
then that could be the problem - is there any way I can force it to do
garbage collection?
Any comment on how PHP uses memory would be appreciated - I would really
hate to have to break the script into smaller pieces (or change ISP for
that matter :) ).
Thanks!
Anze
我已经在想一个解决方案，我的错......
查看你的脚本你有全局变量的地方你不再需要b $ b不再需要它们（未设置（
I''m already thinking of a solution, my fault...
Look into your script for where you have global variables which you
don''t need anymore and then unset them (unset(
var））。
如果您无法通过这种方式解决问题，可以通过SSH或其他方式与您的ISP联系以运行
脚本。
我不认为你会经常运行脚本或者你呢？如果你这样做，我建议你考虑一下你的b
编程的逻辑和效率。
var)).
If you can''t solve it this way, you can contact your ISP to run the
script for you through SSH or something.
I don''t think you would run the script often or do you? If you do, I
suggest thinking about the logic and effeciency about your piece of
programming.
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