摘要： <?phpecho chunk_split("iamasmallgogo",2,","); ia,ma,sm,al,lg,og,o,echo chunk_split("iamasmallgogo",1,","); i,a,m,a,s,m,a,l,l,g,o,g,o,?> 数字符串中各个字符出现的频率 阅读全文