php-bitcoinrpc package provides a handful of methods to assist with value conversion.
Those methods are available in Denpa\Bitcoin namespace.

to_bitcoin()

Converts value from satoshi to bitcoin.

echo \Denpa\Bitcoin\to_bitcoin(100000); // 0.00001

to_satoshi()

Converts value from bitcoin to satoshi.

echo \Denpa\Bitcoin\to_satoshi(0.00001); // 100000

to_ubtc()

Converts value from bitcoin to ubtc/bits.

echo \Denpa\Bitcoin\to_ubtc(0.001); // 1000.0000

to_mbtc()

Converts value from bitcoin to mbtc.

echo \Denpa\Bitcoin\to_mbtc(0.001); // 1.0000

to_fixed()

Trims float value to precision (defaults to 8) without rounding.

echo \Denpa\Bitcoin\to_fixed(0.1236, 3); // 0.123

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