📊 PHP
Q. Which PHP function locks a file for exclusive writing?
  • (A) file_lock()
  • (B) lockfile()
  • (C) flock()
  • (D) fmutex()
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✅ Correct Answer: (C) flock()

Explanation: flock() provides portable advisory file locking.

Explanation by: Mr. Dubey
flock() provides portable advisory file locking.

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