获取数组中的唯一值，并在不使用数组函数的情况下计数

如果你只想获得没有重复的数组计数，你可以这样做：

<?php
$arrData = array(3, 5, 5, 8, 7, 6, 3, 1, 2, 8, 9);
$out = array();
foreach ($arrData as $item) {
    if (!in_array($item, $out)) {
        $out[] = $item;
    }
}

echo count ($out);

如果你想知道发生的次数，你可以这样做：

<?php
$arrData = array(3,5,5,8,7,6,3,1,2,8,9);
$out = array();
foreach ($arrData as $item) {
    if (isset($out[$item])) {
        ++$out[$item];
    }
    else {
        $out[$item] = 1;
    }
}
foreach ($out as $item => $count) {
    echo $item.' '.$count."<br />";
}
echo count($out);

您可以使用循环简单地迭代每个元素，并使用第一个数组中的值和出现次数创建新数组。

使用类似的东西：

<?php
    $arrData    = array(3,5,5,8,7,6,3,1,2,8,9);
    $tmpArray   = array();
    $i = 0;
    foreach($arrData as $k => $v)
    {
        if(!in_array($v, $tmpArray))
        {
            $tmpArray[$k] = $v; 
            $i++;
        }
    }
    echo "Unique array size is: ".$i;
?>

无in_array

<?php
    $arrData    = array(3,5,5,8,7,6,3,1,2,8,9);
    $tmpArray   = array();
    foreach($arrData as $k => $v)
    {
        $tmpArray[$k] = $v; 
    }
    $i = 0;
    foreach($tmpArray as $k => $v)
    {
        $i++;
    }
    echo "Unique array size is: ".$i;
?>

<?php
$arrData = array(3,5,5,8,7,6,3,1,2,8,9);
foreach($arrData as $x){
  foreach($arrData as $y=>$t){
      if($x == $y){
          $array[$x] =0;
      }else{
          $array[$x] =1;
      }
   }
}
$numCount =0;
foreach($array  as $q=>$r){
   $numCount +=1;
}
echo $numCount ;
?>

使用此php函数

$arrData = array(3,5,5,8,7,6,3,1,2,8,9);
array_count_values($arrData );
 print_r($arrData );

dublicat数组值的widtout函数默认值

$arrData = array(3, 5, 5, 8, 8, 7, 6, 3, 1, 2, 8, 9);
    $i=0;
   $valueArray='';
$newDublicatValue=array();
foreach($arrData as $key=>$value){
    if ($arrData[$key]==$valueArray){
        $newDublicatValue[]=$arrData[$key];
    }
    $valueArray=$arrData[$key];
}
print_r($newDublicatValue);

或使用此函数删除阵列中的重复值

$result = array_unique($arrData );
print_r($result);

dublicat数组值的widtout函数默认值

$arrData = array(3, 5, 5, 8, 8, 7, 6, 3, 1, 2, 8, 9);
    $i=0;
   $valueArray='';
$newDublicatValue=array();
foreach($arrData as $key=>$value){
    if ($arrData[$key]==$valueArray){
       unset($arrData[$i]);
    }
    $valueArray=$arrData[$i];
    $i++;
}
print_r($arrData);

<?php
  $arr1 = [1,1,2,3,4,5,6,3,1,3,5,3,20];    
  print_r(arr_unique($arr1)); // will print unique values
  echo "<br>";
  echo "Unique value count => ".count(arr_unique($arr1)); // Will print unique value count
  echo "<br>";
  arr_count_val($arr1); // will print array with duplicate values
  function arr_unique($arr) {
      sort($arr);
      $curr = $arr[0];
      $uni_arr[] = $arr[0];
      for($i=0; $i<count($arr);$i++){
          if($curr != $arr[$i]) {
              $uni_arr[] = $arr[$i];
              $curr = $arr[$i];
          }
      }
      return $uni_arr;
  }
  function arr_count_val($arr) {
      $uni_array = arr_unique($arr);
      $count = 0;
      foreach($uni_array as $n1) {
          foreach($arr as $n2) {
              if($n1 == $n2) {
                  $count++;
              }
          }
          echo "$n1"." => "."$count"."<br>";
          $count=0; 
      }
  }
?>