#33 - array_keys in PHP || PHP Array Functions

#17 - sqrt in PHP || PHP Math Functions

#16 - pow in PHP || PHP Math Functions

#15 - min in PHP || PHP Math Functions

#14 - max in PHP || PHP Math Functions

#13 - rand in PHP || PHP Math Functions

#12 - getrandmax in PHP || PHP Math Functions

#11 - floor in PHP || PHP Math Functions

#10 - fmod in PHP || PHP Math Functions

#9 - exponential in PHP || PHP Math Functions

#8 - decoct in PHP || PHP Math Functions

#7 - dechex in PHP || PHP Math Functions

#6 - decbin in PHP || PHP Math Functions

#5 - cos in PHP || PHP Math Functions

#4 - ceil in PHP || PHP Math Functions

#3 - bindec in PHP || PHP Math Functions

#2 - base_convert in PHP || PHP Math Functions

#36 - sizeof in array in PHP || PHP Array Functions

#35 - list in PHP || PHP Array Functions

#1 - abs in PHP || PHP Math Functions

#34 - in_array in PHP || PHP Array Functions

#33 - array_keys in PHP || PHP Array Functions

#32 - array_values in PHP || PHP Array Functions

#31 - array_unshift in PHP || PHP Array Functions

#30 - array_unique in PHP || PHP Array Functions