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thinkphp截取中文字符串函数


2015-07-19519 views
msubstr($str, $start=0, $length, $charset=”utf-8″, $suffix=true) $str:要截取的字符串 $start=0:开始位置,默认从0开始 $length:截取长度 $charset=”utf-8″:字符编码,默认UTF-8 $suffix=true:是否在截取后的字符后面显示省略号,默认true显示,false为不显示 在thinkphp模板引擎里可以这样写:{$vo.title|msubstr=0,5,’utf-8′,false} 至于{$vo.title}这个大家肯定不陌生了。就说说后边的函数msubstr吧。它代表的意思是截取字符串$vo.title,从0个字符开始截取,截取5个字符。使用的是utf-8编码,默认截取后不显示省略号,如果要显示省略号,直接把false改成true就可以啦。 函数:
function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true) { if(function_exists("mb_substr")){ if($suffix) return mb_substr($str, $start, $length, $charset)."..."; else return mb_substr($str, $start, $length, $charset); } elseif(function_exists('iconv_substr')) { if($suffix) return iconv_substr($str,$start,$length,$charset)."..."; else return iconv_substr($str,$start,$length,$charset); } $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef] [x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/"; $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/"; $re['gbk'] = "/[x01-x7f]|[x81-xfe][x40-xfe]/"; $re['big5'] = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/"; preg_match_all($re[$charset], $str, $match); $slice = join("",array_slice($match[0], $start, $length)); if($suffix) return $slice."…"; return $slice; }

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