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PHP - IN ? ??? ?? PDO ??
? ??? ?? PHP ???? PHP?? IN ? ? ??? ?? PDO? ???? ???? ??? ??????

PHP?? IN ? ? ??? ?? PDO? ???? ???? ??? ??????

Dec 19, 2024 am 10:06 AM

How to Correctly Use PDO with an IN Clause and an Array in PHP?

PHP - IN ? ??? ?? PDO ??

PDO? ???? ? ??? ?? IN ?? ??? SQL ?? ??? ? ????. ? ?? ??? ??? ??(implode())? ????? ?? ???? ??? ? ??? ??? ? ????.

?? ??

?? ??? ?? ???, ???? ?? ??? ???? ??:

$in_array = array(1, 2, 3);
$in_values = implode(',', $in_array);
$my_result = $wbdb->prepare("SELECT * FROM my_table WHERE my_value IN (:in_values)");
$my_result->execute(array(':in_values' => $in_values));
$my_results = $my_result->fetchAll();

? ??? my_value? ??? ?? ??? ?????. ?? ??(2? 3)? ?? $in_array? ? ?? ??(1).

?? ?? ???? ???

PDO??? ?? ???? ?? ???? ???? ???? ???. ???? ?? ?? ?????? ??? ?????. ?? ?? ???? ?? ? ???? ?????.

$in  = str_repeat('?,', count($in_array) - 1) . '?';
$sql = "SELECT * FROM my_table WHERE my_value IN ($in)";
$stm = $db->prepare($sql);
$stm->execute($in_array);
$data = $stm->fetchAll();

??? ?? ???? ?? ???

??? ?? ???? ?? ?? ???? ??? ?? ???(?: :id0, :id1, :id2) ?? ?-? ??? ?????. ?? ??? ????.

$ids = [1,2,3];
$in = "";
$i = 0;
foreach ($ids as $item)
{
    $key = ":id" . $i++;
    $in .= ($in ? "," : "") . $key; // :id0,:id1,:id2
    $in_params[$key] = $item; // collecting values into a key-value array
}

$sql = "SELECT * FROM table WHERE foo=:foo AND id IN ($in) AND bar=:bar";
$stm = $db->prepare($sql);
$stm->execute(array_merge(["foo" => "foo", "bar" => "bar"], $in_params)); // merge two arrays
$data = $stm->fetchAll();

??? ???? ??? ? ??? ??? IN ?? ?? PDO? ????? ??? ? ????.

? ??? PHP?? IN ? ? ??? ?? PDO? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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