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");
?>
(PHP 5, PHP 7, PHP 8)
mysqli::$info -- mysqli_info — Retrieves information about the most recently executed query
Object-oriented style
Procedural style
The mysqli_info() function returns a string providing information about the last query executed. The nature of this string is provided below:
| 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 |
Note:
Queries which do not fall into one of the preceding formats are not supported. In these situations, mysqli_info() will return an empty string.
mysqlProcedural style only: A mysqli object returned by mysqli_connect() or mysqli_init()
A character string representing additional information about the most recently executed query.
Example #1 $mysqli->info example
Object-oriented style
<?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);Procedural style
<?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));The above examples will output:
Records: 150 Duplicates: 0 Warnings: 0
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");
?>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.If inserted just one row, mysqli_info() returns empty string which might be confusing, but mysqli_affected_rows() returns 1 in this case.