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I wanted to actually ask the same thing! I knew of continue but I never encountered such a scenario. It's a poor man's generator.

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In other languages (such as PHP), the same thing can sometimes be achieved by using "break N" / "continue N", where N is the number of loop you wish to break/continue.

Specifically in PHP, though, you can't (anymore) break a variable value.

break $n;

isn't valid since PHP 5.4

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