Question

我的info表格包含以下列：

Id | Name | City | date | status

我想从info中选择所有名称，并使用以下查询：

$query = mysql_query("SELECT name FROM info WHERE status = 1 ORDER BY id") 
         or die(mysql_error());

while ($raw = mysql_fetch_array($query)) 
{
  $name = $raw["name"];
  echo ''.$name.'<br>';
}

命名列内容示例：

alex
alex1
alex2
michel22
michel33
michel44

好吧，结果是它返回所有条目。我希望回显所有条目而不重复但只有内容指定的关键字

说：在原始name下，我们已经插入名称“alex and michel”10次，格式不同。

我只想回应：

alex
michel

有一次可能吗？

Answer 1

首先使用mysqli或pdo来连接数据库。不推荐使用mysql。

$mysqli = new mysqli($dbhost, $dbuser, $dbpass, $dbname);
$result = mysqli_query($mysqli,"SELECT name FROM info WHERE status = 1 ORDER BY id") or die(mysqli_error($mysqli));

$uniqueNames = array();
while ($row = mysqli_fetch_assoc($result)) {
    $nameWithoutNumbers = preg_replace('/[0-9]+/', '', $row["name"]); //removes the numbers and leave only names
    $uniqueNames[$nameWithoutNumbers] = 1; //just a filtering hack, if key exits value is replaced otherwise a new key is created
}
foreach($uniqueNames as $name => $one)
    echo $name; //remember you were saving your names as keys pointing to 1s

选择一行没有重复条目的关键字

1 个答案: