php - 为 MySQL 结果设置用户变量

Question

我需要帮助设置 MySQL 结果的用户变量。

从“表 2”组中选择 ptype、COUNT(ptype) BY ptype ORDER BY COUNT(ptype)

我想为所有类型的结果值创建一个用户变量(TD=5、DT=13、...等)

我该如何解决这个问题？

dw

<?$connector=mysqli_connect("localhost","", "","");

						
$res2=mysqli_query($connector, "SELECT ptype, COUNT(ptype) FROM `TABLE 2` GROUP BY ptype");


for (i = 0; i <12; i++) {
$carrier[i] = while ($row=mysqli_fetch_array($res3)) {echo $row['COUNT(carrier)'];}
						}			

Answer 1

尝试:

$ptype = array();
if($res2=mysqli_query($connector, "SELECT ptype, COUNT(ptype) AS pnum FROM TABLE 2 GROUP BY ptype")){
  while($row=mysqli_fetch_array($res2)) {
    $ptype[] = $row['pnum'];
  }
} else {
  printf("Error: %s\n", mysqli_error($connector));
}