What are the potential security risks associated with using OPcache in a shared-hosting environment with PHP?

Potential security risks associated with using OPcache in a shared-hosting environment with PHP include the risk of sensitive data being cached and accessible to other users on the shared server. To mitigate this risk, it is recommended to disable OPcache in a shared-hosting environment. 

opcache.enable=0

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OPcache shared-hosting security risks PHP vulnerabilities

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