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How to get the total found rows without considering the limit in PDO?

Asked 2011-01-04T16:52:54.623
11

I found it very unprofessional to make a secondary query to check for more results in order to display a load more button.

I'm using PDO, is there any way to get the total found rows without the limit filter but still filtering the results?

Current Code:

// Show Results

$start = 0

$r=$db->prepare("SELECT * FROM locations WHERE area=:area LIMIT $start,10");
$r->execute($fields);

// See if there is more results

$r=$db->prepare("SELECT * FROM locations WHERE area=:area");
$r->execute($fields);

$offset=$start+10;
if($r->rowCount() > $offset){
echo "<div class='load'>Load More</div>";
}
php mysql pdo
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1 Answer

16

MySQL only AFAIK: 

$r=$db->prepare("SELECT SQL_CALC_FOUND_ROWS * FROM locations WHERE area=:area LIMIT $start,10");
$r->execute($fields);

var_dump($r->fetchAll());

var_dump($db->query('SELECT FOUND_ROWS();')->fetch(PDO::FETCH_COLUMN));

About as heavy for the database server as querying a single time for all the records of course. For non-MySQL use, this query is of course better then getting the rowcount of all the records:

$r=$db->prepare("SELECT COUNT(*) FROM locations WHERE area=:area");
$r->execute($fields);
$count = $r->fetch(PDO::FETCH_COLUMN);
echo $count;
answered 2011-01-04T16:58:15.370

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