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? ??? ?? PHP ???? PDO? ???? MySQL ?? ??? LIMIT? ???? ???? ??? ??????

PDO? ???? MySQL ?? ??? LIMIT? ???? ???? ??? ??????

Nov 27, 2024 pm 03:57 PM

How to Correctly Use LIMIT in MySQL Prepared Statements with PDO?

MySQL ??? ??? LIMIT ??? ??

PDO? ??? MySQL?? ??? ?? ??? ? LIMIT ???? ??? ??? ??? ? ????. ?? ??:

SELECT id, content, date
FROM comment
WHERE post = ?
ORDER BY date DESC
LIMIT ?, ?

PDO ?? ???? ???? ??? LIMIT 0, 10?? ???? ?????. ? ??? PDO? ????? ???? ??? ??? ?? ????.

PDO ???? ???

PDOStatement::execute()? ????? ?? ?? ????? ???? ?????. ????? LIMIT ?? ???? $min ? $max? ???? ?????. ?? ?? MySQL? ??? ??? ?? ?? ?????.

LIMIT '0', '10'

?? ?? ??? ????

???

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

  • ???? ?? ???: ?? BindParam()? ???? ? ????? ??:
$comments->bindParam(1, $post, PDO::PARAM_STR);
$comments->bindParam(2, $min, PDO::PARAM_INT);
$comments->bindParam(3, $max, PDO::PARAM_INT);
  • ???? ???? ??: ???? $min ? $max ????? ???? ?????. ? ??? ??:
$query = sprintf('SELECT id, content, date
    FROM comment
    WHERE post = ?
    ORDER BY date DESC
    LIMIT %d, %d', $min, $max);
  • ????? ?? ????: MySQL ?????? ????? ?? ????:
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, FALSE);

??? ???? ??? ??? ? MySQL?? ??? ???? ?? LIMIT ???? ????? ??? ? ????.

? ??? PDO? ???? MySQL ?? ??? LIMIT? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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