get row count in pdo class - after fetching data - php

Question

this is my pdo class
<?php
class Database
{
protected $dbh;
protected $query;
public $rows;
public function __construct($host,$user,$pass,$dbname)
{
// Set DSN
$dsn = 'mysql:host=' . $host . ';dbname=' . $dbname;
// Set options
$options = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create a new PDO instanace
try
{
$this->dbh = new PDO($dsn, $user, $pass, $options);
}
catch(PDOException $e)
{
echo $this->error = $e->getMessage();
die();
}
}
public function query($query)
{
$this->query = $this->dbh->query($query);
}
public function fetchAllQuery()
{
return $this->query->fetchAll(PDO::FETCH_ASSOC);
}
public function rowCountQuery()//--------------------------------(1)
{
//for get all the rows when query execute
$arr = $this->fetchAllQuery()
$this->rows = count($arr);
}
}
$database = new Database('localhost','root','','speed');
$area='aa';
$price=200;
$query = $database->query("SELECT * FROM tbl_deliverygrid");
$result = $database->fetchAllQuery();///-------------------------------(2)
echo '<pre>',print_r($result),'</pre><br>';
echo 'row count query [['.count($result).']]<br>';
$database->rowCountQuery();//---------------calling (1)
echo '['.print_r($database->rows).']';
echo '<br>';
i want to get row count of a query
for that instead of using rowCount() method i use fetch all the rows to variable as a array and then count the elements of that array
rowCountQuery method consist above functionality
but i cant get row count now??? method returns null output
but if i remove (2) i can get and echo the output from rowCountQuery method
corrrectly
i want to know how to get row count not removing (2)

Answer 1

<?php
class Database
{
protected $dbh;
protected $query;
public $rows;
protected $count;
public function __construct($host,$user,$pass,$dbname)
{
// Set DSN
$dsn = 'mysql:host=' . $host . ';dbname=' . $dbname;
// Set options
$options = array(
PDO::ATTR_PERSISTENT => true,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
);
// Create a new PDO instanace
try
{
$this->dbh = new PDO($dsn, $user, $pass, $options);
}
catch(PDOException $e)
{
echo $this->error = $e->getMessage();
die();
}
}
public function query($query)
{
$this->query = $this->dbh->query($query);
}
public function fetchAllQuery()
{
$result = $this->query->fetchAll(PDO::FETCH_ASSOC);
$this->count = count($result);
return $result;
}
public function rowCountQuery()//--------------------------------(1)
{
return $this->count;
}
}
$database = new Database('localhost','root','','speed');
$area='aa';
$price=200;
$query = $database->query("SELECT * FROM tbl_deliverygrid");
$result = $database->fetchAllQuery();///-------------------------------(2)
echo '<pre>',print_r($result),'</pre><br>';
echo 'row count query [['.count($result).']]<br>';
echo '['.print_r($database->rowCountQuery()).']';
echo '<br>';

Answer 2

You are consecutively fetching a result set twice in the same script, which will result in a null result for the 2nd request. Since you already have the result set after (2), you can execute count() on $result.