post blank – max size issue?

waitman
(@waitman)

16 years, 2 months ago

Hi,

When I post something preformatted in HTML that’s over 100K or so (between 100K and 170K) the post is blank. Editing the post – the edit texarea is blank. The title shows up on the main index page without and text, clicking on the title takes me to the full view page but it’s blank.

In the database table, the full text is there. In phpMyAdmin I can view all the rows of the entries and hit the full text view, it shows a big long page with several posts that are over 100K each. But they are blank in WordPress.

There are no errors or warnings in my logs.

My php.ini is set, I upped the max memory limits and timeouts.

Still blank on the site and blank in the “edit” but it’s all in the database.

Any ideas? This doesn’t seem like a php or mysql or memory issue. (because i can view several posts in phpMyAdmin without any problem).

I grepped for “strlen” and “max” and “limit” and “set_timeout” in all the WP files and didn’t see anything useful. I’m wondering if this is somehow a utf8_conversion (or another similar conversion) problem. I seem to remember php mysteriously returning blank strings from the utf8 conversion function when working with large xml files. I had to break the data up into chunks to get it to work. That’s my memory anyhow, I’ll check it out.

other than that, any ideas or feedback? I appreciate your help.

Viewing 15 replies - 1 through 15 (of 21 total)

1 2 →

Thread Starter waitman
(@waitman)

16 years, 2 months ago
it’s happening in apply_filters. if i return $string at the beginning of the function so it does nothing, the full post appears but it’s sort of run together.

if i check $string to see if it’s an array, then print ‘
```
',print_r($string),'
```
‘ – the full post text appears twice within the array (it’s being sent to this function twice for some reason before the content.

using this method, it shows

Array ()

(empty array) when the post is supposed to appear… (um, that’s probably why it’s blank)

trying to figure out what’s going on… any idears?

🙂
Thread Starter waitman
(@waitman)

16 years, 2 months ago

still working on this. it’s definitely happening in function wpautop, in formatting.php
Thread Starter waitman
(@waitman)

16 years, 2 months ago
it’s this line that’s wiping out the entire content string.

(formatting.php line 71)
```
$pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s',
"$1\n", $pee);
// make paragraphs, including one at the end
```
commenting that line out fixes the problem. All the posts now appear.

I’m tired, going to bed.

*** Clearly this is causing a problem but it’s for the devs to look at, I’m not strong enough with regexp’s to see the problem right off the bat, it would ‘prolly take me hours and I don’t have that tonight.
westpointer
(@westpointer)

16 years, 1 month ago

(formatting.php line 71)

$pee = preg_replace(‘/\n?(.+?)(?:\n\s*\n|\z)/s’,
“$1\n”, $pee);
// make paragraphs, including one at the end

commenting that line out fixes the problem. All the posts now appear.

Bless you! I was having the exact same issue. Commenting out the line above fixed it.

westpointer
(@westpointer)

16 years, 1 month ago

Hmmm … commenting out the line does fix the problem BUT the length of the content is not the issue. Something else is going on for me. I’ll try to dig into the preg_replace tomorrow.

duncanmc
(@duncanmc)

15 years, 12 months ago

I get exactly the same problem. Entered a bug report.

erodleir
(@erodleir)

15 years, 12 months ago

Yes, I have the same problem. I sent a threat with this bug but nobody found an answer. I will delete my message to keep only this…

erodleir
(@erodleir)

15 years, 12 months ago

Nobody can answer for this bug?
I can´t see where is the problem…
Help us!

MichaelH
(@michaelh)

15 years, 12 months ago

Just linking to the trac ticket:
http://trac.wordpress.org/ticket/6877

adam-s
(@adam-s)

15 years, 12 months ago

This is a preg_replace bug I think. I’ll look up the reference but I ran into similar trouble with a home built CMS and has to use something other than preg_replace

adam-s
(@adam-s)

15 years, 12 months ago

Still can’t find the reference I found before. Can’t tell if it’s really a bug or if preg_replace causes some sort of memory error. The problem I ran into was a seg fault.

I am 99.9% positive that preg_replace would be at fault though.

rodleir
(@rodleir)

15 years, 12 months ago

Yes, I saw the trac ticket. I delete the line in formatting.php that says:
$pee = preg_replace(‘/\n?(.+?)(?:\n\s*\n|\z)/s’, “<p>$1</p>\n”, $pee); // make paragraphs, including one at the end

But the problem continue… I don´t know how can I do with this.
I still looking for the solution…
Thanks, MichaelH…

duncanmc
(@duncanmc)

15 years, 11 months ago

I wrote a solution to http://trac.wordpress.org/ticket/6877

rodleir
(@rodleir)

15 years, 11 months ago

Yes, I saw the solution. But I don´t understand the solution. Only replace that line? Sorry, I´m learning php… And thanks…

duncanmc
(@duncanmc)

15 years, 11 months ago

find pcre.backtrack_limit line in php.ini file and replace 100000 with 1000000 or 10000000. If there is a ; at the beginning of the line, remove ;