Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php

Question

Allowed memory size of 33554432 bytes exhausted (tried to allocate 43148176 bytes) in php

any suggestion

Answer 1

Increase your maximum memory limit to 64MB in your php.ini file.

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But could I ask why you are trying to allocate that much memory? What line of code does it fail at?

Answer 2

Your script is using too much memory. This can often happen in PHP if you have a loop that has run out of control and you are creating objects or adding to arrays on each pass of the loop.

Check for infinite loops.

If that isn't the problem, try and help out PHP by destroying objects that you are finished with by setting them to null. eg. $OldVar = null;

Check the code where the error actually happens as well. Would you expect that line to be allocating a massive amount of memory? If not, try and figure out what has gone wrong...

Answer 3

If you are trying to read a file, that will take up memory in PHP. For instance, if you are trying to open up and read an MP3 file ( like, say, $data = file("http://mydomain.com/path/sample.mp3" ) it is going to pull it all into memory.

As Nelson suggests, you can work to increase your maximum memory limit if you actually need to be using this much memory.

Answer 4

1st suggestion is right one. Dynamically increasing memory limit in the script is done via function ini_set():

ini_set('memory_limit', '128M');

Answer 5

ini_set('memory_limit', '128M');

i used same thing but it showing same problem

Answer 6

It is unfortunately easy to program in PHP in a way that consumes memory faster than you realise. Copying strings, arrays and objects instead of using references will do it, though PHP 5 is supposed to do this more automatically than in PHP 4. But dealing with your data set in entirety over several steps is also wasteful compared to processing the smallest logical unit at a time. The classic example is working with large resultsets from a database: most programmers fetch the entire resultset into an array and then loop over it one or more times with foreach(). It is much more memory efficient to use a while() loop to fetch and process one row at a time. The same thing applies to processing a file.

Answer 7

At last I found the answer:

ini_set('memory_limit', '-1');

It will take unlimited memory usage of server, it's working fine.

Thanks for giving suggestion friends.

Answer 8

If you want to read large files, you should read them bit by bit instead of reading them at once.
It’s simple math: If you read a 1 MB large file at once, than at least 1 MB of memory is needed at the same time to hold the data.

So you should read them bit by bit using fopen & fread.

Answer 9

I had a similar issue basically I had a method calling itself (slight over sight on my behalf) but I thought it was worth mentioning.