PHP mysqli: info() function

Last update on August 19 2022 21:51:16 (UTC/GMT +8 hours)

mysqli_info function / mysqli::$info

The mysqli_info function / mysqli::$info — retrieves information about the most recently executed query.

This function works with the following query types:

Possible mysqli_info return values
Query	Return values
INSERT INTO...SELECT...	Records: 10 Duplicates: 0 Warnings: 0
INSERT INTO...VALUES (...),(...),(...)	Records: 5 Duplicates: 0 Warnings: 0
LOAD DATA INFILE ...	Records: 1 Deleted: 0 Skipped: 0 Warnings: 0
ALTER TABLE ...	Records: 4 Duplicates: 0 Warnings: 0
UPDATE ...	Rows matched: 50 Changed: 50 Warnings: 0

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

Syntax:

Object oriented style

string $mysqli->info;

Procedural style

string mysqli_info ( mysqli $link )

Parameter:

Name	Description	Required/Optional
connection	A link identifier returned by mysqli_connect() or mysqli_init()	Required for procedural style only and Optional for Object oriented style

Usage: Procedural style

mysqli_info(connection);

Parameter:

Name	Description	Required/Optional
connection	Specifies the MySQL connection to use.	Required

Return value:

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

Version: PHP 5, PHP 7

Example of object oriented style:

<?php
$mysqli = new mysqli("localhost", "user1", "datasoft123", "hr");

/* 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();
?>

Example of procedural style:

<?php
$link = mysqli_connect("localhost", "user1", "datasoft123", "hr");

/* 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);
?>

Output:

Records: 150  Duplicates: 0  Warnings: 0

Example:

<?php
$con=mysqli_connect("localhost","user1","datasoft123","hr");
// Check connection
if (mysqli_connect_errno())
  {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  }

// Perform queries
$sql1="CREATE TABLE orders LIKE employees";
mysqli_query($con,$sql1);
$sql2="INSERT INTO orders SELECT * FROM oldorders ORDER BY Last_Name LIMIT 10";
mysqli_query($con,$sql2);

// Print info about most recently executed query
echo mysqli_info($con); 

mysqli_close($con);
?>

See also

PHP Function Reference

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