Getting Row Count
You can get a
PDOStatement and do rowCount(). PDO offers a function for returning the number of rows found by the query,
PDOstatement::rowCount(). But you will hardly need it, as there are much easier options like using count() php function to count array returned by query. We will learn below. PDO has PDOStatement::rowCount(), which apparently does not work in MySql
Example : (Wrong Way of Counting Row)
<?php $db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password'); $stmt = $db->query('SELECT * FROM table'); $row_count = $stmt->rowCount(); echo $row_count.' rows selected';
But, This is terrible thing to use, You should never use rowCount() , for just counting the number of rows returned.
Right Way :-
one have to ask a database to count them, and return the result in a single row:
<?php $db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password'); $count = $db->query("SELECT count(1) FROM table")->fetchColumn(); echo $count; $nRows = $pdo->query('select count(*) from table')->fetchColumn(); echo $nRows; ?>
- To count number of rows in the table, use
SELECT COUNT(*)query as they are more efficient.
- To count no. of rows returned by query, use
rowCount()or simply call
count()php function on the array returned by
Some of the content has been taken from php.net and wikipedia.com website.
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