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implementing PHP 8.2 and Memory Leaks using Recursive Function Calls with Large Arrays

👀 Views: 68 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-07
php memory-leak recursion PHP

I'm not sure how to approach I've been struggling with this for a few days now and could really use some help. I'm working with a memory leak scenario in my PHP 8.2 application when using recursive function calls to process large arrays. I have a function that processes nested data structures, and as the depth of recursion increases, I notice that memory usage climbs significantly, eventually leading to a fatal behavior due to exhaustion of memory. Here's the function I wrote: ```php function processArray(array $data) { foreach ($data as $key => $value) { if (is_array($value)) { processArray($value); } else { // Some processing on $value echo $value . "\n"; } } } ``` I am calling this function like so: ```php $largeArray = [ 'item1' => 'value1', 'item2' => [ 'subitem1' => 'subvalue1', 'subitem2' => [ 'subsubitem1' => 'subsubvalue1', // More nested items ], ], // More items ]; processArray($largeArray); ``` The array can grow quite large, with potentially hundreds of nested levels. I've already tried increasing the memory limit in my `php.ini` file using `memory_limit = 512M`, but the memory usage still spikes, and I get the behavior: ``` Fatal behavior: Allowed memory size of 134217728 bytes exhausted (tried to allocate 4096 bytes) ``` I've also attempted to use `array_walk_recursive` to handle the processing, but it seems to have similar issues. Is there a more efficient way to handle deeply nested arrays in PHP without running into memory issues? Any advice on best practices for managing memory in recursive calls would also be appreciated. This issue appeared after updating to Php latest. Thanks, I really appreciate it! This is my first time working with Php latest. Cheers for any assistance!