Is there something similar to NEGATIVE_INFINITY in php?

Question

I love the negative infinity value in javascript, I think it's useful and clean in many case to use it but couldn't find something similar in PHP, does it exists?

Answer 1

-INF 

Got it from comment at PHP Documentation:

I just learnt of INF today and found out that it can be used in comparisons:

echo 5000 < INF ? 'yes' : 'no';       // outputs 'yes'
echo INF < INF ? 'yes' : 'no';        // outputs 'no'
echo INF <= INF ? 'yes' : 'no';       // outputs 'yes'
echo INF == INF ? 'yes' : 'no';       // outputs 'yes'

You can also take its negative:

echo -INF < -5000 ? 'yes' : 'no';    // outputs 'yes'

Division by INF is allowed:

echo 1/INF;    // outputs '0'

And test for it:

is_infinite(INF);   returns true
is_infinite(-INF);  returns true
is_infinite(1.01);  return false