To amplify the points made by ChOas and kschwab:
the loop test of --$i also means that the loop won't execute if the array has a single element, since the test is made before the first execution. It also means that the loop will die with mysterious errors if the array is empty, since -1 passes the test.

In reply to Re: help in understanding the standard array shuffle by TheoPetersen
in thread help in understanding the standard array shuffle by Anonymous Monk

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