(PHP 7 >= 7.2.0)
sodium_crypto_aead_aes256gcm_keygen — Get random bytes for key
sodium_crypto_aead_aes256gcm_keygen ( ) : string
This function is currently not documented; only its argument list is available.
This function has no parameters.
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https://www.php.net/manual/en/function.sodium-crypto-aead-aes256gcm-keygen.php