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mysqli::$info

mysqli_info

(PHP 5, PHP 7, PHP 8)

mysqli::$info -- mysqli_infoObtiene la información de la última consulta ejecutada

Descripción

Estilo orientado a objetos

Estilo por procedimientos

mysqli_info(mysqli $link): string

La función mysqli_info() devuelve una cadena facilitando información sobre la última consulta ejecutada. La naturaleza de esta cadena está indicada abajo:

Posibles valores de retorno de mysqli_info
Tipo de consulta Ejemplo de cadena devuelta
INSERT INTO...SELECT... Records: 100 Duplicates: 0 Warnings: 0
INSERT INTO...VALUES (...),(...),(...) Records: 3 Duplicates: 0 Warnings: 0
LOAD DATA INFILE ... Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
ALTER TABLE ... Records: 3 Duplicates: 0 Warnings: 0
UPDATE ... Rows matched: 40 Changed: 40 Warnings: 0

Nota:

Las consultas que no estén incluidas en uno de los formatos anteriores no están soportadas. En estas situaciones, mysqli_info() devolverá una cadena vacía.

Parámetros

link

Sólo estilo por procediminetos: Un identificador de enlace devuelto por mysqli_connect() o mysqli_init()

Valores devueltos

Una cadena de caracteres representando información adicional sobre la última consulta ejecutrada.

Ejemplos

Ejemplo #1 Ejemplo de $mysqli->info

Estilo orientado a objetos

<?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();
}

$mysqli->query("CREATE TEMPORARY TABLE t1 LIKE City");

/* INSERT INTO .. SELECT */
$mysqli->query("INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n", $mysqli->info);

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

Estilo por procedimientos

<?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();
}

mysqli_query($link, "CREATE TEMPORARY TABLE t1 LIKE City");

/* INSERT INTO .. SELECT */
mysqli_query($link, "INSERT INTO t1 SELECT * FROM City ORDER BY ID LIMIT 150");
printf("%s\n", mysqli_info($link));

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

El resultado de los ejemplos sería:

Records: 150  Duplicates: 0  Warnings: 0

Ver también

add a note

User Contributed Notes 3 notes

up
26
user at biglake dot com
13 years ago
Might save someone some time...

<?php
$prototype
='Rows matched: 0 Changed: 1 Warnings: 2';
list(
$matched, $changed, $warnings) = sscanf($prototype, "Rows matched: %d Changed: %d Warnings: %d");
?>
up
0
Rumour
4 months ago
I don't recall where I got this, but it is SUPER important information and I cannot believe it is missing from the documentation!

If you do a mysqli_info()/$mysqli->info() after a "INSERT INTO ... VALUES ()" that adds/updates JUST ONE ROW, then, mysqli::info() returns an empty result (!!!).

If it is empty (null on php 8+; in php 7 I don't know in which way it is empty) check $mysqli->affectedRows() or mysqli_affected_rows(). If that returns 2, the INSERT did a successful UPDATE of ONE record (so there must have been a ON DUPLICATE KEY UPDATE). If it returns 1: there was an INSERT of ONE record.

This is not a bug, this is BY DESIGN, although it does remind me strongly of "This is not a bug, this is a feature" Microsoft of the 90's. I have no clue why you would design it this way except for some weird and extremely old backward compatibility issues.
up
0
vzverev [at] newmail.ru (Vasiliy Zverev)
7 years ago
If inserted just one row, mysqli_info() returns empty string which might be confusing, but mysqli_affected_rows() returns 1 in this case.
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