What are the implications of parsing large amounts of PHP code when multiple users are accessing a website simultaneously?

Parsing large amounts of PHP code when multiple users are accessing a website simultaneously can lead to increased server load and slower response times. To mitigate this issue, one solution is to use opcode caching, which stores compiled PHP code in memory to reduce the need for parsing and compiling the code on each request. 

// Enable opcode caching in PHP
// Example using OPcache
if (extension_loaded('Zend OPcache')) {
    ini_set('opcache.enable', 1);
    ini_set('opcache.enable_cli', 1);
    ini_set('opcache.memory_consumption', 128);
    ini_set('opcache.interned_strings_buffer', 8);
    ini_set('opcache.max_accelerated_files', 10000);
    ini_set('opcache.revalidate_freq', 2);
}

Keywords

concurrency PHP code parsing performance scalability web server architecture

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