... preg_match — 进行正则表达式匹配 preg_quote — 转义正则表达式字符 preg_replace_callback — 用回调函数执行正则表达式的搜索和替换 ...
基于4个网页-相关网页
由于模式是正则表达式，应确保转义正则表达式中的任何保留字符。
Since the pattern is a regular expression, be sure to escape any characters that are reserved characters in regular expressions.
在一个字符串上调用。r会把它变成一个正则表达式；我们是用了原始(三重引号)字符串来避免诸多双重转义的反斜杠。
Calling.r on a string turns it into a regular expression; we use raw (triple-quoted) strings here to avoid having to double-escape backslashes.
应用推荐