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(PHP 5, PHP 7)
mysqli_result::$num_rows -- mysqli_num_rows — Gets the number of rows in a result
Description ¶
Object oriented style
Procedural style
Returns the number of rows in the result set.
The behaviour of mysqli_num_rows() depends on whether buffered or unbuffered result sets are being used. For unbuffered result sets, mysqli_num_rows() will not return the correct number of rows until all the rows in the result have been retrieved.
Parameters ¶
resultProcedural style only: A result set identifier returned by mysqli_query(), mysqli_store_result() or mysqli_use_result().
Return Values ¶
Returns number of rows in the result set.
Examples ¶
Example #1 Object oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
if ($result = $mysqli->query("SELECT Code, Name FROM Country ORDER BY Name")) {
/* determine number of rows result set */
$row_cnt = $result->num_rows;
printf("Result set has %d rows.\n", $row_cnt);
/* close result set */
$result->close();
}
/* close connection */
$mysqli->close();
?>Example #2 Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
if ($result = mysqli_query($link, "SELECT Code, Name FROM Country ORDER BY Name")) {
/* determine number of rows result set */
$row_cnt = mysqli_num_rows($result);
printf("Result set has %d rows.\n", $row_cnt);
/* close result set */
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>The above examples will output:
Result set has 239 rows.
See Also ¶
- mysqli_affected_rows() - Gets the number of affected rows in a previous MySQL operation
- mysqli_store_result() - Transfers a result set from the last query
- mysqli_use_result() - Initiate a result set retrieval
- mysqli_query() - Performs a query on the database
add a noteUser Contributed Notes 5 notes
122
6 years ago
If you have problems making work this num_rows, you have to declare ->store_result() first.
<?php
$mysqli = new mysqli("localhost","root", "", "tables");
$query = $mysqli->prepare("SELECT * FROM table1");
$query->execute();
$query->store_result();
$rows = $query->num_rows;
echo $rows;
// Return 4 for example
?>2
8 months ago
This function doesn't work with LIMIT used jointly with SQL_CALC_FOUND_ROWS. If you want to obtain the total rows found you must do it manually, example:
<?php
public function errorList(int $limit=25,int $offset=0){
$errorList = array();
$result = $this->con->query("SELECT SQL_CALC_FOUND_ROWS id, erreur FROM Erreurs ORDER BY id DESC LIMIT $limit OFFSET $offset");
while($row = $result->fetch_assoc()){
$errorList[] = new Erreur($row);
}
$result->free();
// $foundRows = $result->num_rows; // 25
$foundRows = $this->con->query("SELECT FOUND_ROWS() as foundRows");
$this->foundRows = $foundRows->fetch_assoc(); // 178
return $errorList;
}
?>0
5 months ago
The method signature should be:
mixed mysqli_num_rows (mysqli_result $result)
"If the number of rows is greater than PHP_INT_MAX, the number will be returned as a string."-1
4 months ago
// Create Database Connection ..
$conn = new mysqli("localhost", "root", "", "my_db");
// run a query on a table from your DB.
$sql_rec = $conn->query("select count(msisdn) from my_colum where id = '$id'"); // Take out the Where Clause if not Needed.
if($sql_rec == true)
{
echo " The Total Number of MSISDNs are " . $sql_rec->num_rows;
}
else
{
echo "Something Bad has happened, We have informed the village Elders.". $conn->connect_error();
}
$conn->close();-24
2 years ago
in php 5.3.8 had unexpected troubles when checking for mysqli_result::$num_rows
If the result of the query is empty then var_dump of the result will be like this:
class mysqli_result#5 (5) {
public $current_field => NULL
public $field_count => NULL
public $lengths => NULL
public $num_rows => NULL
public $type => NULL
}
but var_dump($result->num_rows) will give integer-typed zero instead of NULL:
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