Fatal error: Allowed memory size of 33554432 bytes exhausted

Question

$html = file_get_html('http://www.oddsshark.com/mlb/odds');

echo $html;

When ehcoed, the error message in the title of this question appears? I've had problems that are similar to this before. In all cases, I didn't actually need to increase the memoery in php.ini. Rather, there was a missing curly bracket that was needed to close a loop. This page that I'm requesting via the file_get_html function appears fine in my browser, but it just won't let me echo the html via php.

Any ideas?

Did you try using `file_get_contents()` instead of `file_get_html()`? — Raz Harush, May 18 '13 at 18:37
Yeah, but that's not compatible with an html parser that I'm using. — Lance, May 18 '13 at 18:38
@Kolink It's part of [PHP Simple HTML DOM Parser](http://simplehtmldom.sourceforge.net/manual.htm) — Barmar, May 18 '13 at 18:38
Also beware with Simple HTML DOM Parser: http://simplehtmldom.sourceforge.net/manual_faq.htm#memory_leak — jabbink, May 18 '13 at 18:40
You say the error occur when you echo (as opposed to when you call the file_get_html() function ) ? — FMaz008, May 18 '13 at 18:42
That's correct. I only get an error message when echoing it. — Lance, May 18 '13 at 18:43
Use DOMDocument / SimpleXML instead. They are better memory optimized (and Simple HTML DOM Parser is really not necessary any longer for most PHP installments). — hakre, May 18 '13 at 18:43
What's the size of the variable content ? Can you to echo strlen($html);die(); ? Is $html an object or a string ? Some object contain recursive reference making them unprintable ( they generate infinite content) — FMaz008, May 18 '13 at 18:44
I would rather say that something is wrong when it comes to getting file contents. Function is "looped" and memory is exhausted. — webrama.pl, May 18 '13 at 18:44
Yeah, that's what I'm guessing too. Know of any good alternatives to the simple html dom parser? — Lance, May 18 '13 at 18:46

score 0 · Answer 1 · answered May 18 '13 at 18:36

0

increase your memory limit in php.ini file

search for

; Maximum amount of memory a script may consume (128MB)
; http://php.net/memory-limit
memory_limit = 128M

in your php.ini file and increase it to 512M

answered May 18 '13 at 18:36

Manish Jangir

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3
9

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If it takes more than 33MB to load a 300kb HTML file, there's a problem that's bigger than just a memory limit. – Niet the Dark Absol May 18 '13 at 18:37
It can also be done by setting ini_set('memory_limit', '128M') directly in PHP file. – Deniss Kozlovs May 18 '13 at 18:37
The problem has probably to do with the internal processing of the HTML so either fixing the code is an option or increasing the limit. – jabbink May 18 '13 at 18:38
Unless you modify the PHP Simple HTML DOM Parser library, it gives up if the file is more than 600KB, to avoid using too much memory. – Barmar May 18 '13 at 18:40
1

@Kolink: The problem is the library. And you can't expect to get it actually fixed because it's superfluous in times of DOMDocument and friends. So suggesting to increase the memory limit - even if not very creative - actually sounds not like the worst suggestion here. The alternative is to replace the library (and I would go with that normally). – hakre May 18 '13 at 18:45

score 0 · Accepted Answer · edited May 23 '17 at 11:43

0

Why not use a library that is more memory optimized, simple HTML DOM is just not necessary any longer:

$html = new DOMDocument;
$html->loadHTMLFile('http://www.oddsshark.com/mlb/odds');
echo $html->saveHTML();

More suggestions are available with the reference question about that topic:

How do you parse and process HTML/XML in PHP?

edited May 23 '17 at 11:43

Community

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answered May 18 '13 at 18:48

hakre

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'->:' ... the : is a typo, right ? This is a good answer, but I don't see the use for using DOMDocument just to print the raw source of an HTTP request, look like it will generate a useless object and involve useless processing... – FMaz008 May 18 '13 at 18:53
@FMaz008: Yes, the colon `:` is a typo. Sure :) - Fixed + Thx. - For the example: This is the example the user does in the question, so I actually did not judge about how high- or low-level it is, just showing that other libraries are able to read a document into memory without triggering the memory limit. – hakre May 18 '13 at 21:25

FMaz008 · Answer 3 · 2013-05-18T18:57:13.227

I really don't think this usage justify increasing the memory. If it go over, it's because there is a problem : Simple HTML DOM Parser is known to suffer from memory leak.

If you just need to retrieve the content of a remote page using HTTP, just do the following. This is the simplest and most resource efficient way I know to retrieve content from a remote page:

<?php
$homepage = file_get_contents('http://www.example.com/');
echo $homepage;
?>

If you need to do more advance queries, you may look into cURL: http://php.net/manual/en/book.curl.php

Pupil · Answer 4 · 2013-05-18T18:56:22.767

-2

Edit your php.ini file

memory_limit=512M

OR add a line in your PHP file:

ini_set('memory_limit', '512M');

And the error will get resolved. Note: You can put your value instead of 512M.

edited May 18 '13 at 18:56

answered May 18 '13 at 18:37

Pupil

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Unless, for whatever reason, it takes more than 2GB of memory. – Niet the Dark Absol May 18 '13 at 18:38

Fatal error: Allowed memory size of 33554432 bytes exhausted

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