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mysqli::$info

mysqli_info

(PHP 5, PHP 7, PHP 8)

mysqli::$info -- mysqli_info — Retrieves information about the most recently executed query

Descrizione

Stile orientato agli oggetti

?string $mysqli->info;

Stile procedurale

mysqli_info(mysqli $mysql): ?string

The mysqli_info() function returns a string providing information about the last query executed. The nature of this string is provided below:

**Possible mysqli_info return values**
Query type	Example result string
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:
Queries which do not fall into one of the preceding formats are not supported. In these situations, mysqli_info() will return an empty string.

Elenco dei parametri

link: Solo nello stile procedurale: un identificatore restituito da mysqli_connect() o mysqli_init()

Valori restituiti

A character string representing additional information about the most recently executed query.

Esempi

Example #1 $mysqli->info example

Stile orientato agli oggetti

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

$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);

Stile procedurale

<?php

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$link = mysqli_connect("localhost", "my_user", "my_password", "world");

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));

I precedenti esempi visualizzeranno:

Records: 150  Duplicates: 0  Warnings: 0

Vedere anche:

mysqli_affected_rows() - Gets the number of affected rows in a previous MySQL operation
mysqli_warning_count() - Returns the number of warnings from the last query for the given link
mysqli_num_rows() - Gets the number of rows in the result set

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User Contributed Notes 2 notes

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user at biglake dot com ¶

14 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");
?>

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-3

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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