Fact that perl ternary operator faster than if else

Question

Is perl ternary operator faster than if else, if so by how many time, how to prove it?

Answer 1

if/else and the ternary operator are compiled into the same basic opcodes internally (OP_COND_EXPR). The only difference is that because the code inside the if/else blocks form a new scope, there is extra startup and teardown at the beginning/end of each block.

But the performance difference is unlikely to be significant, and 99.9% of the time you should write the code in the way that maximises readability - for example, not using the ternary operator in void context.