THINKPHP截取中文字符串函数
下面我就为大家分享一个字符串截取函数,以在thinkphp中为例子!
# 函数解释: 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 $suffix=true:是否在截取后的字符后面显示省略号,默认true显示,false为不显示 */模版使用:
{$vo.title|msubstr=0,5,'utf-8',false}
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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