[php-src] Issue #9812: memory usage increasing when using opcache.enable_cli and opcache.file_cache_only

Issue: https://github.com/php/php-src/issues/9812 Author: rbro ### Description The below script using opcache.enable_cli=1 and opcache.file_cache_only=1 causes the PHP memory usage to continue to increase. If I disable file_cache_only, then the memory usage remains constant. I was able to reproduce in PHP 8.1, 8.2, and 7.4. To reproduce, set-up scripts test.php and test2.php as listed below, create an empty directory /tmp/opcache, and then run: ``` php \ -n \ -d "zend_extension=opcache" \ -d "opcache.enable_cli=1" \ -d "opcache.file_cache=/tmp/opcache" \ -d "opcache.file_cache_only=1" \ test.php ``` When I run the above, the value of memory_get_usage() continues to increase. If I remove the line for "opcache.file_cache_only=1", then memory_get_usage() remains constant. If it doesn't happen the 1st time, then try running it a 2nd time. Can you please check why the memory usage continues to grow in this scenario? Thanks for your help. test.php: ``` <?php for ($i = 0; $i < 10000; $i++) { echo number_format(memory_get_usage())."\n"; require('test2.php'); } ``` test2.php: ``` <?php return; ``` ### PHP Version PHP 8.1.11 ### Operating System AlmaLinux 8