Question

需要通过PHP运行mysql SELECT，其中两个数组彼此相等。

 $sql = "SELECT * FROM around WHERE 'array_intersect($ar1, $ar2)'";
 $resultsd = $conn->query($sql);
 foreach($resultsd as $rowd) {

 $sword[] = $rowd['TIM'];
 }

找到匹配后，需要从mysql中的那个特定行拉出来。这需要在PHP中。

阵列来自：

  $ar1 = array();
  $sql = "SELECT * FROM blc WHERE ffv='$safe_username'";
  $results = $conn->query($sql);
  foreach($results as $row) {  
  $ar1[] = $row['vvvs'];
  }

Answer 1

给定两个数组，并希望对这些数组的交集执行查询：

$array1 = array("a" => "green", "red", "blue");
$array2 = array("b" => "green", "yellow", "red");
$result = array_intersect($array1, $array2);

$sql = "SELECT * FROM `around` WHERE `foo` IN ('" . implode("','", $result) . "')";

这导致查询：

SELECT * FROM `around` WHERE `foo` IN ('green','red')

交叉发生在查询之外，因为在数据可用于查询之前，仍然存在与数据有关的事情。实际上我会更整洁，并且这样做：

$results = "'" . implode("','", $result) . "'";
$sql = "SELECT * FROM `around` WHERE `foo` IN ({$results})";

PHP SELECT WHERE array_intersect

1 个答案: