Home Adauga resursa Intra in cont



Home Comunitate Forum Blog Documentatie Gazduire Promovare/SEO Locuri de munca Proiecte Director Galerie CSS

mysqli_affected_rows

Manual PHP
Înapoi		Înainte

mysqli_affected_rows

(PHP 5)

(no version information, might be only in CVS)

mysqli->affected_rows -- Gets the number of affected rows in a previous MySQL operation

Description

Procedural style:

mixed mysqli_affected_rows ( object link)

Object oriented style (property):

class mysqli {

mixed affected_rows

}

mysqli_affected_rows() returns the number of rows affected by the last INSERT, UPDATE, or DELETE query associated with the provided link parameter. If the last query was invalid, this function will return -1.

Notã: For SELECT statements mysqli_affected_rows() works like mysqli_num_rows().

The mysqli_affected_rows() function only works with queries which modify a table. In order to return the number of rows from a SELECT query, use the mysqli_num_rows() function instead.

Return Values

An integer greater than zero indicates the number of rows affected or retrieved. Zero indicates that no records where updated for an UPDATE statement, no rows matched the WHERE clause in the query or that no query has yet been executed. -1 indicates that the query returned an error.

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

Example

Exemplu 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();
}

/* Insert rows */
$mysqli->query("CREATE TABLE Language SELECT * from CountryLanguage");
printf("Affected rows (INSERT): %d\n", $mysqli->affected_rows);

$mysqli->query("ALTER TABLE Language ADD Status int default 0");

/* update rows */
$mysqli->query("UPDATE Language SET Status=1 WHERE Percentage > 50");
printf("Affected rows (UPDATE): %d\n", $mysqli->affected_rows);

/* delete rows */
$mysqli->query("DELETE FROM Language WHERE Percentage < 50");
printf("Affected rows (DELETE): %d\n", $mysqli->affected_rows);

/* select all rows */
$result = $mysqli->query("SELECT CountryCode FROM Language");
printf("Affected rows (SELECT): %d\n", $mysqli->affected_rows);

$result->close();

/* Delete table Language */
$mysqli->query("DROP TABLE Language");

/* close connection */
$mysqli->close();
?>

Exemplu 2. Procedural style


<?php
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

if (!$link) {
    printf("Can't connect to localhost. Error: %s\n", mysqli_connect_error());
    exit();
}

/* Insert rows */
mysqli_query($link, "CREATE TABLE Language SELECT * from CountryLanguage");
printf("Affected rows (INSERT): %d\n", mysqli_affected_rows($link));

mysqli_query($link, "ALTER TABLE Language ADD Status int default 0");

/* update rows */
mysqli_query($link, "UPDATE Language SET Status=1 WHERE Percentage > 50");
printf("Affected rows (UPDATE): %d\n", mysqli_affected_rows($link));

/* delete rows */
mysqli_query($link, "DELETE FROM Language WHERE Percentage < 50");
printf("Affected rows (DELETE): %d\n", mysqli_affected_rows($link));

/* select all rows */
$result = mysqli_query($link, "SELECT CountryCode FROM Language");
printf("Affected rows (SELECT): %d\n", mysqli_affected_rows($link));

mysqli_free_result($result);

/* Delete table Language */
mysqli_query($link, "DROP TABLE Language");

/* close connection */
mysqli_close($link);
?>

The above examples would produce the following output:

Affected rows (INSERT): 984
Affected rows (UPDATE): 168
Affected rows (DELETE): 815
Affected rows (SELECT): 169

Înapoi	Acasã	Înainte
Improved MySQL Extension	Sus	mysqli_autocommit

Ultimele discutii in forum

Ultimele articole

Membri recenti

alleku	partytis
serderta	tavi
Erkhan	Ronnix
wermopnu	rudolf2
cautcasanoua	bunamati

Top membri

Pirahna la birou	carco Bucuresti
Birkoff Bucuresti	Mascka Braila
raul_	whooper Toronto ON
mihaitha Sibiu	gabysolomon Bacau
oriceon Constanta	garlicinicolae

Email:
	inscriere
	renuntare

Arhiva newsletter

Parteneriat

mysqli_affected_rows

Description

Return Values

See also

Example

Ultimele discutii in forum

Ultimele articole

Membri recenti

Top membri

Newsletter

Parteneriat