标签:字符截取函数
字符截取函数:
<?php function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true){ if(function_exists("mb_substr")){ $slice= mb_substr($str, $start, $length, $charset); }elseif(function_exists(‘iconv_substr‘)) { $slice= iconv_substr($str,$start,$length,$charset); }else{ $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)); } $fix=‘‘; if(strlen($slice) < strlen($str)){ $fix=‘...‘; } return $suffix ? $slice.$fix : $slice; } ?>
此外php函数mb_substr();也可以截取字符。
标签:字符截取函数
原文地址:http://7300272.blog.51cto.com/7290272/1948702