(PHP 5, PHP 7, PHP 8)
mysqli_result::$num_rows -- mysqli_num_rows — Gets the number of rows in the result set
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.
This function returns 0 for unbuffered result sets unless
all rows have been fetched from the server.
resultProcedural style only: A mysqli_result object returned by mysqli_query() , mysqli_store_result() , mysqli_use_result() or mysqli_stmt_get_result() .
An int representing the number of fetched rows.
Returns 0 in unbuffered mode unless all rows have been
fetched from the server.
Note:
If the number of rows is greater than
PHP_INT_MAX, the number will be returned as a string .
Example #1 Object-oriented style
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
$result = $mysqli->query("SELECT Code, Name FROM Country ORDER BY Name");
/* Get the number of rows in the result set */
$row_cnt = $result->num_rows;
printf("Result set has %d rows.\n", $row_cnt);Example #2 Procedural style
<?php
mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
$result = mysqli_query($link, "SELECT Code, Name FROM Country ORDER BY Name");
/* Get the number of rows in the result set */
$row_cnt = mysqli_num_rows($result);
printf("Result set has %d rows.\n", $row_cnt);The above examples will output:
Result set has 239 rows.
Note:
In contrast to the mysqli_stmt_num_rows() function, this function doesn't have object-oriented method variant. In the object-oriented style, use the getter property.
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
?>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;
}
?>