PHP Memory Limit - using less memory than the limit, but still error occurs

Question

I have a strange memory limit issue in PHP. I have to read a lot of data into an array using a particular script, and I keep running out of memory.

My memory is now at 2048M in the php.ini file, and phpinfo() indicates it as such, yet, I keep getting this error:

Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 142610432 bytes) in ... on line 173

Now - those two total about 680MB. This is far below the limit I set it to. Why would this error still occur?

Did you try setting it with ini_set("memory_limit" , "2048M"); in most cases this will overwrite all other configuration. Is that what you mean with in the config file — angel.bonev
– angel.bonev, Commented Jan 16, 2023 at 14:38
You can view how PHP Configuration is biuld in this answer stackoverflow.com/a/33933470/3768239 — angel.bonev
– angel.bonev, Commented Jan 16, 2023 at 14:40
Yep, two different php.inis for CLI and webserver. phpinfo() should tell you which one it uses — user8034901
– user8034901, Commented Jan 16, 2023 at 14:51
As it seems that phpinfo() isn't totally telling us the correct value, I would try and search recursively in all config files below /etc with a tool such as rg (ripgrep). You could do cd /etc and then simply rg memory_limit. You might have to do it under your document root also. — Patrick Janser
– Patrick Janser, Commented Jan 16, 2023 at 14:56

angel.bonev · Accepted Answer · 2023-01-17 07:13:53Z

1

Try using ini_set

Sets the value of the given configuration option. The configuration option will keep this new value during the script's execution, and will be restored at the script's ending.

ini_set("memory_limit" , "2048M");

In most cases ini_set rewrites all other PHP configurations

answered Jan 17, 2023 at 7:13

angel.bonev

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