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php – With mysql_fetch_array I can easily count the rows returned. Can I do something similar with mysql_fetch_object?

Posted by: admin July 12, 2020 Leave a comment

Questions:

(Apologies if necessary–my first Stack Overflow question. I’ll be happy to modify it if anyone has suggestions. I have looked for an answer but I’m afraid my grasp of the terminology isn’t good enough to make a complete search.)

I’m accustomed to using mysql_fetch_array to get records from a database.
When getting records that way, mysql_num_rows gives me a count of the rows.
On my current project, however, I’m using mysql_fetch_object.
mysql_num_rows doesn’t seem to work with this function, and when I do a ‘count’ on the results of the query I get the expected answer: 1 (one object).

Is there a way to ‘see into’ the object and count the elements inside it?

How to&Answers:

The function mysql_num_rows works on your result resource, not your object row.

Example

$link = mysql_connect("localhost", "mysql_user", "mysql_password");
mysql_select_db("database", $link);

$sql = "SELECT id, name FROM myTable";

$result = mysql_query($sql, $link);

$rowCount = mysql_num_rows($result);

while($row = mysql_fetch_object){
    echo "id: ".$row->id." name: ".$row->name."<BR>";
}
echo "total: ".$rowCount;

Answer:

Try count( (array)$object ).

Answer:

If you’re using it in procedural style (i.e. mysql_fetch_object() vs. $result->fetch_object()), mysql_num_rows should work exactly the same way as when using mysql_fetch_array(). Could you post some sample code?

Answer:

<?php
mysql_connect("localhost", "user", "password");
mysql_select_db("database");

$result = mysql_query("SELECT SQL_CALC_FOUND_ROWS * FROM table");
$countQuery = mysql_query("SELECT found_rows() AS totalRows");
$rows = mysql_fetch_object($countQuery);
echo $rows->totalRows;
?>

I hope this is useful 🙂