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? ??? ?? PHP ???? ?????? ?? ? ??? ???? ?? PHP?? PDO? ????? ????? ??? ?? ????

?????? ?? ? ??? ???? ?? PHP?? PDO? ????? ????? ??? ?? ????

Dec 19, 2024 am 04:49 AM

How Can I Effectively Use PDO in PHP to Handle Database Queries and Errors?

??: ???? PDO ??

PDO? ??????

PHP ??? ??(PDO) )? ??? ??????? ????? ?? ???? ?? ??? ?????? ???? PHP? ?????? ??? ?????.

?? ?? ??

1. PDO ??? ????? ?? ??? ??

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

$dsn = "mysql:host=$host;dbname=$db;charset=utf8";
$opt = [
    PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION
];
$pdo = new PDO($dsn, $user, $pass, $opt);

try-catch ??? ???? ??? ????? ????? ? ?? ??? ?? ??? ?? ?? ???

2. LIKE ???? ???? ??? ?

???? ?? ???? ???? PDO::quote()? ???? LIKE ???? ????????. ?:

$stmt = $pdo->prepare("SELECT * FROM users WHERE name LIKE ?");
$stmt->execute(['%search_term%']);

3. IN () ???? ?? ??? ?

? ??? ???? ?? ? ?? ????? binParam()? ?????:

$values = [1, 2, 3];
$stmt = $pdo->prepare("SELECT * FROM users WHERE id IN (?)");
$stmt->bindParam(1, $values, PDO::PARAM_INT, count($values));
$stmt->execute();

4. ??? ??? ?? ???

??? ?? ??? ?? ???? ????? ? ??? ? ????. ??? ?? ??????? ????? PDO::quote()? ?? ???? PDO ???? ?????.

5. LIMIT ??? PDO ?? ?

$stmt = $pdo->prepare("SELECT * FROM users ORDER BY id LIMIT ?");
$stmt->bindParam(1, $limit, PDO::PARAM_INT);
$stmt->execute([$limit]);

try-catch ?? ?? ?? ???? ???? ?? ???? ????. ?? ??? ??? ???? ????? ??? ? ? ????

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

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Undresser.AI Undress

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???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

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Video Face Swap

??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

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