How can collisions be minimized when generating unique keys in PHP?

Collisions can be minimized when generating unique keys in PHP by using a combination of techniques such as using cryptographic hashing functions, appending timestamps, and incorporating randomness. By implementing these methods, the likelihood of collisions occurring when generating unique keys is significantly reduced.

// Generating a unique key using a combination of hashing, timestamp, and randomness
$uniqueKey = hash('sha256', uniqid(mt_rand(), true) . microtime(true) . mt_rand());