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php 正则表达式
2022-06-23 10:30:00 【古月的博客】
1、preg_match:matches[0] 是正则表达式匹配到的字符串，matches[1]…一次匹配到的"()"
2、preg_match_all:跟preg_match匹配一次相比，preg_match_all匹配多次
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