MySQL - count total number of rows in 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("select count(1) FROM table");
$row = mysql_fetch_array($result);
$total = $row[0];
echo "Total rows: " . $total;
mysql_close($con);
?>
How to get total number of rows in a MySQL database?
Use the schema:
SELECT SUM(TABLE_ROWS)
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = '{DB_NAME}'
That is what phpmyadmin is using.
Source: Get record counts for all tables in MySQL database
How to count number of rows in MySQL table (PHP PDO)
you are overriding the $stmt after execute using fetchAll()
so instead try this
$stmt->execute();
$totalrows = $stmt->rowCount();
echo $totalrows;
// Pick up the result as an array
$result = $stmt->fetchAll();
How can I count the numbers of rows that a MySQL query returned?
Getting total rows in a query result...
You could just iterate the result and count them. You don't say what language or client library you are using, but the API does provide a mysql_num_rows function which can tell you the number of rows in a result.
This is exposed in PHP, for example, as the mysqli_num_rows function. As you've edited the question to mention you're using PHP, here's a simple example using mysqli functions:
$link = mysqli_connect("localhost", "user", "password", "database");
$result = mysqli_query($link, "SELECT * FROM table1");
$num_rows = mysqli_num_rows($result);
echo "$num_rows Rows\n";
Getting a count of rows matching some criteria...
Just use COUNT(*) - see Counting Rows in the MySQL manual. For example:
SELECT COUNT(*) FROM foo WHERE bar= 'value';
Get total rows when LIMIT is used...
If you'd used a LIMIT clause but want to know how many rows you'd get without it, use SQL_CALC_FOUND_ROWS in your query, followed by SELECT FOUND_ROWS();
SELECT SQL_CALC_FOUND_ROWS * FROM foo
WHERE bar="value"
LIMIT 10;
SELECT FOUND_ROWS();
For very large tables, this isn't going to be particularly efficient, and you're better off running a simpler query to obtain a count and caching it before running your queries to get pages of data.
count the number of rows in mysql?
How do we count them back together? LIKE: 1 2 3 4 5. i not want use of id in column database
select list_of_fields,@rn:=@rn+1 as row_num
from table,(select @rn:=0) as r order by id
Count number of rows in Mysql using PHP7
The mysqli_
functions actually accept the link as the first argument, as it is non-optional like it is with the normal mysql_
functions.
This should work as you expect:
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("host", "username", "password","db_name");
mysqli_set_charset($link, "utf8mb4");
$result = mysqli_query($link, "SELECT count(*) FROM blackandwhite");
$num_rows = mysqli_fetch_row($result)[0];
echo "$num_rows Rows\n";
MySQL rows count with PHP and show result
You're trying to fetch the results from database
... not from your actual database of predator_db
.
I'll do it with the basics, but please look into MySQLi prepared statements and/or PDO.
$link = mysqli_connect("localhost", "predator_db", "PASS", "predator_db");
$result = mysqli_query($link, "select COUNT(id) AS count FROM `database`");
// make sure it worked
if(!$result) {
die('Error: ' . mysqli_error($link));
} else {
$num_rows = mysqli_fetch_assoc($result);
// echo it
echo "Rows: " . $num_rows['count'];
}
select count(*) from table of mysql in php
You need to alias the aggregate using the as
keyword in order to call it from mysql_fetch_assoc
$result=mysql_query("SELECT count(*) as total from Students");
$data=mysql_fetch_assoc($result);
echo $data['total'];
Trying to count total number of rows in a table using PHP and Mysql
$sql=$db->prepare('SELECT id FROM students');
$sql->execute();
$sql->store_results();
$total=$sql->num_rows();
$sql->close();
return$total;
Returning row data
function getStudents(){
$sql=$db->prepare('SELECT id, fname, lname FROM students');
$sql->execute();
$sql->bind_result($id,$fname,lname);
while($sql->fetch()){
$students[]=array('id'=>$id,'fname'=>$fname,'lname'=>$lname);
}
$sql->close();
return$students;
}
$students=getStudents();
//if you print $students it should look: Array([0]=>Array('id'=>1,'fname'=>'ak','lname'=>'pk')[1]=>Array('id'=>2,'fname'=>'aks','lname'=>'pks')[2]=>Array('id'=>3,'fname'=>'akss','lname'=>'pkss'))
With this array you can use a foreach.
echo"<table><th>ID</th><th>fname</th><th>lname</th>";
foreach($students as$student){
//now the array students is 'split' into student. student is now Array('id'=>1,'fname'=>'ak','lname'=>'pk'); and so on.
echo"<tr><td>".$student['id']."</td><td>".$student['fname']."</td><td>".$student['lname']."</td></tr>";
}
echo"</table>";
Same page processing.
<?php
function getStudents(){
$db=new mysqli('local','user','pass','database');//obviously put outside of function if used elsewhere
$sql=$db->prepare('SELECT id, fname, lname FROM students');
$sql->execute();
$sql->bind_result($id,$fname,$lname);
while($sql->fetch()){
$students[]=Array('id'=>$id,'fname'=>$fname,'lname'=>$lname);
}
$sql->close();
return$students;
}
$students=getStudents();
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<!--other doc head stuff here-->
</head>
<body>
<nav><ol><li><a href="">Home</a></li></ol></nav>
<!-- more body stuff blahh blahh-->
<table>
<tr>
<th>ID</th>
<th>First name</th>
<th>Last name</th>
</tr>
<?php
foreach($students as $student){
echo"<tr><td>".$student['id']."</td><td>".$student['fname']."</td><td>".$student['lname']."</td></tr>";
}
?>
</table>
</body>
</html>
Now it's all neatly within one page and you don't have to fuss about using $_GET
. Hope this helps :)
Please also note that mysql is depreciated. mysqli is now what is used.
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