Shulou(Shulou.com)06/02 Report--

Editor to share with you the example analysis of greed and non-greed in php regular expressions. I believe most people don't know much about it, so share this article for your reference. I hope you can learn a lot after reading this article. Let's learn about it together.

Greed and non-greed

What is greed? for example, if you want to eat one bread and two bread from the string, you can only eat one bread, but you are greedy, so you take out the two loaves from the first to the last one. You want to eat more. If you are not greedy, you will only eat bread.

Let's take a look at how greedy is in the rules.

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