MySQL - count total number of rows in php - php

Question

What is the best MySQL command to count the total number of rows in a table without any conditions applied to it? I'm doing this through php, so maybe there is a php function which does this for me? I don't know. Here is an example of my php:
<?php
$con = mysql_connect("server.com","user","pswd");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("db", $con);
$result = mysql_query("some command");
$row = mysql_fetch_array($result);
mysql_close($con);
?>

Answer 1

<?php
$con = mysql_connect("server.com","user","pswd");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("db", $con);
$result = mysql_query("select count(1) FROM table");
$row = mysql_fetch_array($result);
$total = $row[0];
echo "Total rows: " . $total;
mysql_close($con);
?>

Answer 2

Either use COUNT in your MySQL query or do a SELECT * FROM table and do:
$result = mysql_query("SELECT * FROM table");
$rows = mysql_num_rows($result);
echo "There are " . $rows . " rows in my table.";

Answer 3

mysqli_num_rows is used in php 5 and above.
e.g
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="SELECT Lastname,Age FROM Persons ORDER BY Lastname";
if ($result=mysqli_query($con,$sql))
{
// Return the number of rows in result set
$rowcount=mysqli_num_rows($result);
printf("Result set has %d rows.\n",$rowcount);
// Free result set
mysqli_free_result($result);
}
mysqli_close($con);
?>

Answer 4

Use COUNT in a SELECT query.
$result = mysql_query('SELECT COUNT(1) FROM table');
$num_rows = mysql_result($result, 0, 0);

Answer 5

you can do it only in one line as below:
$cnt = mysqli_num_rows(mysql_query("SELECT COUNT(1) FROM TABLE"));
echo $cnt;

Answer 6

use num_rows to get correct count for queries with conditions
$result = $connect->query("select * from table where id='$iid'");
$count=$result->num_rows;
echo "$count";

Answer 7

for PHP 5.3 using PDO
<?php
$staff=$dbh->prepare("SELECT count(*) FROM staff_login");
$staff->execute();
$staffrow = $staff->fetch(PDO::FETCH_NUM);
$staffcount = $staffrow[0];
echo $staffcount;
?>

Answer 8

<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="SELECT Lastname,Age FROM Persons ORDER BY Lastname";
if ($result=mysqli_query($con,$sql))
{
// Return the number of rows in result set
$rowcount=mysqli_num_rows($result);
echo "number of rows: ",$rowcount;
// Free result set
mysqli_free_result($result);
}
mysqli_close($con);
?>
it is best way (I think) to get the number of special row in mysql with php.

Answer 9

<?php
$conn=mysqli_connect("127.0.0.1:3306","root","","admin");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="select count('user_id') from login_user";
$result=mysqli_query($conn,$sql);
$row=mysqli_fetch_array($result);
echo "$row[0]";
mysqli_close($conn);
?>
Still having problem visit my tutorial http://www.studentstutorial.com/php/php-count-rows.php

Answer 10

$sql = "select count(column_name) as count from table";

Answer 11

Well, I used the following approach to do the same: I have to get a count of many tables for listing the number of services, projects, etc on the dashboard. I hope it helps.
PHP Code
// create a function 'cnt' which accepts '$tableName' as the parameter.
function cnt($tableName){
global $conection;
$itemCount = mysqli_num_rows(mysqli_query($conection, "SELECT * FROM `$tableName`"));
echo'<h6>'.$itemCount.'</h6>';
}
Then when I need to get the count of items in the table, I call the function like following
<?php
cnt($tableName = 'projects');
?>
In my HTML front end, so it renders the count number
It's to be noted that I create the cnt() function as a global function in a separate file which I include in my head, so I can call it from anywhere in my code.