I was reading a book today and saw a regular expression matching statement preg_match in the code. It felt like the water was deep. I searched for some information on the Internet. I don’t have time to study for the time being, but I think there are two URLs for learning in the future. It is more reliable, as follows:
php regular expression manual: php 100
php regular expression: Chuanshanjia
Introduction on the IBM website: php regular expression
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