mysqli_result->lengths
MySQLi_Driver
MySQLi_Result
PHP Manual

# mysqli_result->num_rows

# mysqli_num_rows

(PHP 5)

mysqli_result->num_rows -- mysqli_num_rows — Gets the number of rows in a result

### Opis

Styl obiektowy

mysqli_result
int $num_rows;

Styl proceduralny

int mysqli_num_rows ( mysqli_result `$result` )

Returns the number of rows in the result set.

The use of mysqli_num_rows() depends on whether you use buffered or unbuffered result sets. In case you use unbuffered resultsets mysqli_num_rows() will not return the correct number of rows until all the rows in the result have been retrieved.

### Parametry

`wynik`

  Tylko styl proceduralny: Identyfikator zbioru wyników zwróconych przez mysqli_query(), mysqli_store_result() lub mysqli_use_result().

### Zwracane wartości

Returns number of rows in the result set.

> Informacja: If the number of rows is greater than maximal int value, the number will be returned as a string.

### Przykłady

Styl obiektowy

`<?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();
?>`

Styl proceduralny

`<?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);
?>`

Powyższe przykłady wyświetlą:

    Result set has 239 rows.

### Zobacz też:

- 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

mysqli_result->lengths
MySQLi_Driver
MySQLi_Result
PHP Manual