PHP统计数值数组中出现频率最多的10个数字的方法_PHP
本文实例讲述了PHP统计数值数组中出现频率最多的10个数字的方法。分享给大家供大家参考。具体分析如下:
该问题属于TOPK范畴,统计单词出现频率,做报表,数据统计的时会常用!
php代码如下:
//随机生成数值数组 for($i=0;$i<1000;$i++){ $ary[]=rand(1,1000); } //统计数组中所有的值出现的次数 $ary=array_count_values($ary); arsort($ary);//倒序排序 $i=1; foreach($ary as $key=>$value){ if($i<=10){ printf("数字:%d 共出现 %d 次<br/>",$key,$value); }else{ break; } $i++; } unset($ary);
结果如下:
数字:255 共出现 6 次 数字:443 共出现 5 次 数字:906 共出现 5 次 数字:623 共出现 5 次 数字:586 共出现 4 次 数字:660 共出现 4 次 数字:873 共出现 4 次 数字:208 共出现 4 次 数字:247 共出现 4 次 数字:240 共出现 4 次
希望本文所述对大家的php程序设计有所帮助。

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