I'm using PDO in my application. But I have a problem while I'm working with prepared statements in a query that contains LIMIT
. What's the problem?
Codes:
$start = 0;
$rows = 20;
$sql = "SELECT * FROM tbl_news ORDER BY date DESC LIMIT ?, ?";
$q = $db->prepare($sql);
$q->execute(array($start , $rows));
Error:
check the manual that corresponds to your MySQL server version for the right syntax to use near ''0', '20''
PDO will emulate prepared statements/bound parameters for drivers that do not natively support them, and can also rewrite named or question mark style parameter markers to something more appropriate, if the driver supports one style but not the other.
In layman's terms, PDO prepared statements work like this: Prepare an SQL query with empty values as placeholders with either a question mark or a variable name with a colon preceding it for each value. Bind values or variables to the placeholders. Execute query simultaneously.
PDO (PHP Data Objects) is a general database abstraction layer with support for MySQL among many other databases. It provides prepared statements, and significant flexibility in how data is returned.
PDO is an acronym for PHP Data Objects. PDO is a lean, consistent way to access databases. This means developers can write portable code much easier. PDO is not an abstraction layer like PearDB. PDO is a more like a data access layer which uses a unified API (Application Programming Interface).
Regarding to post LIMIT keyword on MySQL with prepared statement , the code below could solve my problem.
$db->setAttribute(PDO::ATTR_EMULATE_PREPARES, FALSE);
Thanks Álvaro G. Vicario and Maerlyn
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