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

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

Dec 19, 2024 pm 07:45 PM

How Can I Effectively Use PDO's IN Clause with Arrays in PHP?

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

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

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

??? ?? ??? ??? ?? ??? ?????. ??:

$in_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([':in_values' => $in_values]);
$my_results = $my_result->fetchAll();

my_value? $in_array? ?? ???? ?? ??? ???? ?? ? ??? my_value? $in_array? ? ?? ??? ???? ??? ?????.

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

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

?? ???? ?? ?? ?? array_merge() ??? ?????. ?? ?? ??? ????.

$arr = [1, 2, 3];
$in = str_repeat('?,', count($arr) - 1) . '?';
$sql = "SELECT * FROM table WHERE foo=? AND column IN ($in) AND bar=? AND baz=?";
$stm = $db->prepare($sql);
$params = array_merge([$foo], $arr, [$bar, $baz]);
$stm->execute($params);
$data = $stm->fetchAll();

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

$ids = [1, 2, 3];
$in = "";
$i = 0;
foreach ($ids as $item) {
    $key = ":id" . $i++;
    $in .= ($in ? "," : "") . $key;
    $in_params[$key] = $item;
}

$sql = "SELECT * FROM table WHERE id IN ($in)";
$stm = $db->prepare($sql);
$stm->execute(array_merge($params, $in_params));
$data = $stm->fetchAll();

???? ??? ?? ????? ??? ??? ???? ???? ?? ???? ??? ??? ? ????.

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

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? ?? ??? ????? ???? ??? ??????, ???? ?????? ????. ? ???? ?? ???? ?? ??? ?? ????. ???? ??? ???? ???? ??? ?? admin@php.cn?? ?????.

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