Go homepage(回首页)
Upload pictures (上传图片)
Write articles (发文字帖)

The author:(作者)归海一刀
published in(发表于) 2014/2/10 6:52:01
几个比较有用的正则表达式_[PHP教程]

几个比较有用的正则表达式_[PHP教程]

匹配中文字符的正则表达式: [\u4e00-\u9fa5]


匹配双字节字符(包括汉字在内):[^\x00-\xff]


应用:计算字符串的长度(一个双字节字符长度计2,ASCII字符计1)


String.prototype.len=function(){return this.replace([^\x00-\xff]/g,"aa").length;}


匹配空行的正则表达式:\n[\s| ]*\r


匹配HTML标记的正则表达式:/<(.*)>.*<\/\1>|<(.*) \/>/


匹配首尾空格的正则表达式:(^\s*)|(\s*)


验证jpg和GIF图片:^.{1,}\.((j|J)(p|P)(g|G)|(g|G)(i|I)(f|F))


验证IP地址:


^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])







If you have any requirements, please contact webmaster。(如果有什么要求,请联系站长)





QQ:154298438
QQ:417480759