If you encounter the error message "Allowed memory size of XX bytes exhausted" in PHP, it means that your PHP script has exceeded the memory limit allocated by the server. Here are some steps to fix this issue:

Increase the Memory Limit: You can try increasing the memory limit by adding the following line of code at the beginning of your PHP script:

ini_set('memory_limit', '256M');

Adjust the value (e.g., 256M) as per your requirement.

Optimize your Code: Review your code and look for any memory-intensive operations or loops that could be optimized. Consider using more efficient algorithms or data structures to reduce memory usage.

Limit Data Processing: If you are processing a large amount of data, consider processing it in smaller chunks instead of loading everything into memory at once. This can help reduce memory usage.

Use Unset: Explicitly unset variables and objects that are no longer needed to free up memory. For example:

unset($variableName);

Upgrade Server Resources: If possible, consider upgrading your server resources, such as increasing memory or switching to a higher-tier hosting plan that offers more memory allocation.

Remember to monitor your application's memory usage and optimize your code accordingly to avoid memory exhaustion issues in the future.

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