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How to count the most frequent numbers in an array in php

怪我咯
怪我咯Original
2017-07-04 13:14:252122browse

This article mainly introduces the method of counting the 10 most frequently occurring numbers in PHP array, involving the related usage skills of array_count_values and arsort and other methods in PHP, which is very It has practical value. Friends who need it can refer to

. This article describes the method of counting the 10 most frequently occurring numbers in a numerical array in PHP. Share it with everyone for your reference. The specific analysis is as follows:

This question belongs to the TOPK category. It is commonly used to count the frequency of word occurrences, make reports, and perform data statistics!

php code is as follows:

//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);

The result is as follows:

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

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