PHP memory_limit locked to 256MB?

Question

I am trying to set memory_limit to 512M, but it's locekd to 256M.

ini_set('memory_limit','512M');
ini_get('memory_limit');    //> Returns: 256M

I have full control on my server. (it's a dedicated)

Please note that everything under 512M works.

ini_set('memory_limit','16M');
ini_get('memory_limit');    //> Returns: 16M

Solution

I found out why. in php.ini I had memory_limit = 256M. Maybe this is considered as an upper limit

possible dupe: http://stackoverflow.com/questions/5061917/ini-setmemory-limit-in-php-5-3-3-is-not-working-at-all — lamplightdev, Mar 01 '12 at 15:47
Did you try raising it in php.ini as well? Or is this just a one-off thing where you want to grant only a specific script more memory? — , Mar 01 '12 at 15:56

score 8 · Accepted Answer · edited May 23 '17 at 12:09

8

3 possibles I can think of / find:

Prior to PHP 5.2.1, in order to use this directive it had to be enabled at compile time by using --enable-memory-limit in the configure line.

OR

The issue detailed here: ini_set("memory_limit") in PHP 5.3.3 is not working at all

OR

ini_set is disabled

edited May 23 '17 at 12:09

Community

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answered Mar 01 '12 at 16:13

Ingmar Boddington

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Looks like the second one is the most probable. – Mchl Mar 01 '12 at 16:31
Which version of PHP are you running? – Ingmar Boddington Mar 01 '12 at 17:22
I found in my php.ini memory_limit = 256M. That was locking to that value. I have PHP `5.3.3-7` – dynamic Mar 01 '12 at 17:23

Stephen Senkomago Musoke · Answer 2 · 2012-03-01T16:13:11.660

4

You can also try to change the memory_limit using either a php.ini or .htaccess file

php.ini

memory_limit = 512M;

.htaccess

php_value memory_limit 512M

edited Mar 01 '12 at 16:13

answered Mar 01 '12 at 16:05

Stephen Senkomago Musoke

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@Ing - sorry I had mixed up my variables, so let me update my answer – Stephen Senkomago Musoke Mar 01 '12 at 16:11

Paul · Answer 3 · 2016-12-21T16:16:08.623

3

A bit late in the day but editing the php.ini file didn't work for php 7.1 using Mac OS 10.11.6. I still kept on getting the 'PHP Fatal error: Allowed memory size of....' which from its value showed the memory setting was not updating after starting apache.

So instead of editing the file.

/usr/local/php5/lib/php.ini

I found changing the following file fixed this issue.

/usr/local/php5/php.d/99-liip-developer.ini

This file was actually replacing the values set in the initial php.ini file. Again making the following changes to the line...

memory_limit = 256M

to

memory_limit = 1024M

And restarting apache.

sudo /usr/sbin/apachectl restart

edited Dec 21 '16 at 16:16

answered Dec 21 '16 at 00:01

Paul

129
5

Please edit your answer with more details about to your solution. This is a path file, nothing explicitly related to memory. – Georges O. Dec 21 '16 at 00:27
Saved me hours. Thanks! – Marius S Mar 19 '17 at 15:46
It does solve the problem Georges, that is the correct path for the memory_limit in some cases, at least in mine. Thanks Paul !! – Rod Dec 04 '18 at 06:13

score 2 · Answer 4 · answered Dec 09 '15 at 17:40

2

I noticed that on my Mac (OS X El Capitan) and the new PHP 7.0.0, I cannot change memory_limit via php.ini

But I can change it via /etc/apache2/httpd.conf by adding the line in the end:

php_value memory_limit 1024M

and restarting apache server:

sudo apachectl restart

And it is the correct php.ini , I can change other settings via it.

answered Dec 09 '15 at 17:40

Oleksiy Muzalyev

948
11
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Good shout - however it should be noted that this will not change the *master* php value, and instead changes the *local* value for each site (as per the `.htaccess` or `ini_set` solutions) – Stumblor Dec 30 '16 at 12:53

score 0 · Answer 5 · answered Mar 01 '12 at 16:10

0

You could check in your php.ini config file at the directive called "disable_functions". Check if ini_set is disabled.

Also if safe_mode is enabled such option may not be overriden.

answered Mar 01 '12 at 16:10

musse1

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score 0 · Answer 6 · answered Mar 01 '12 at 17:22

0

I found out why. in php.ini I had memory_limit = 256M. Maybe this is considered as an upper limit.

I rised it to my need.

answered Mar 01 '12 at 17:22

dynamic

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PHP memory_limit locked to 256MB?

Solution

6 Answers6

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