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摘要： $len){ return "".mb_substr($key,0,$len,$enc)."..."; } $result = "".$key.""; for($i = 0;$i= 0){ $result = mb_substr($str,$leftpos--,1,$enc).$result; }else{ $result .= mb_substr($str,$rightpos++,1,$enc); } } if($leftpos >= 0){ $result =... 阅读全文