preg_match_all的相关资料介绍
preg_match_all 进行全局正则表达式匹配,这篇文章主要介绍下preg_match_all的相关资料,需要的朋友可以参考下
preg_match_all — 进行全局正则表达式匹配 说明 代码如下: int preg_match_all ( string pattern, string subject, array matches [, int flags] ) 在 subject 中搜索所有与 pattern 给出的正则表达式匹配的内容并将结果以 flags 指定的顺序放到 matches 中。 搜索到第一个匹配项之后,接下来的搜索从上一个匹配项末尾开始。 特别注意PREG_PATTERN_ORDER 和PREG_SET_ORDER flags 可以是下列标记的组合(注意把 PREG_PATTERN_ORDER 和 PREG_SET_ORDER 合起来用没有意义): 如果使用PREG_PATTERN_ORDER 对结果排序使 $matches[0] 为全部模式匹配的数组,$matches[1] 为第一个括号中的子模式所匹配的字符串组成的数组,以此类推。(即$matches[0] [0]为全部模式匹配中的每一项,$matches[0] [1]为全部模式匹配中的第二项,$matches[1] [0]为匹配每一个括号中的第一项,$matches[1] [0]为匹配每一个括号中的第二项) 代码如下: ]+>(.*)[^>]+>|U","example:
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