This happened to me a few years ago before I knew about SO, but I'm still curious. When I was still learning the basics of PHP, I accidentally typed $i = $i++; When I tested the webpage in the browser, The server crashed and it took a long time to get it back up. I've typed in some pretty stupid things before and created a bunch of infinite loops, but for some reason, that was the worst. Does anyone know why this line was so 'poisonous'
PHP：$ i = $ i ++崩溃了服务器
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- douya2433 2010-01-04 11:17关注
$i = $i++;is the same as$i = $i;essentially.Unfortunately
$i = $i++;is known as "undefined behavior".Anything could happen simply because the compiler can't fully comprehend what is going on.
There's an excellent SO question covering similar undefined behavior here.
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