LOG(3) 1 LOG(3)
log - Natural logarithm
SYNOPSIS
float log (float $arg, [float $base = M_E])
DESCRIPTION
If the optional $base parameter is specified, log(3) returns logbase$arg, otherwise log(3) returns the natural logarithm of $arg.
PARAMETERS
o $arg
- The value to calculate the logarithm for
o $base
- The optional logarithmic base to use (defaults to 'e' and so to the natural logarithm).
RETURN VALUES
The logarithm of $arg to $base, if given, or the natural logarithm.
SEE ALSO
log10(3), exp(3), pow(3).
PHP Documentation Group LOG(3)
