What does setting "max_execution_time" to "-1" do?

Question

I saw this in a script I have to work with. What does setting "max_execution_time" to "-1" do?

Answer 1

It sets the maximum execution time for a script to 2**32-1 (or perhaps 2**64-1) seconds, which is a reasonable approximation of "forever". Note that the actual value to make a script run forever is 0.