What are the limitations of executing multiple PHP functions simultaneously?

When executing multiple PHP functions simultaneously, one limitation is the potential for race conditions, where functions may interfere with each other's data or resources. To solve this issue, you can use synchronization techniques like locking mechanisms to ensure that only one function can access shared resources at a time. 

$lock = fopen("lockfile.lock", "w");

if (flock($lock, LOCK_EX)) {
    // Critical section - execute functions that require exclusive access to shared resources
    
    flock($lock, LOCK_UN);
} else {
    echo "Could not acquire lock!";
}

fclose($lock);

Keywords

concurrency PHP functions limitations performance threading

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