stats_rand_ranf(3) php man page | unix.com

STATS_RAND_RANF(3)							 1							STATS_RAND_RANF(3)

stats_rand_ranf  -  Returns  a	random	floating point number from a uniform distribution over 0 - 1 (endpoints of this interval are not returned)
using the current generator

SYNOPSIS
       float stats_rand_ranf (void  )

DESCRIPTION
       Warning

	      This function is currently not documented; only its argument list is available.

PARAMETERS
RETURN VALUES
PHP Documentation Group 													STATS_RAND_RANF(3)