How to JSON encode MySQL results with PHP?

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Sometimes, we want to JSON encode MySQL results with PHP.

In this article, we’ll look at how to JSON encode MySQL results with PHP.

How to JSON encode MySQL results with PHP?

To JSON encode MySQL results with PHP, we can call json_encode on the array that we get from mysqli_fetch_assoc.

For instance, we write

$sth = mysqli_query($conn, "SELECT ...");
$rows = array();
while ($r = mysqli_fetch_assoc($sth)) {
    $rows[] = $r;
}
print json_encode($rows);

to make the query with mysqli_query.

Then we run a while loop that calls mysqli_fetch_assoc to fetch the results as associative arrays and put them into $rows.

Then we call json_encode with $rows to return the rows as a JSON string.

Conclusion

To JSON encode MySQL results with PHP, we can call json_encode on the array that we get from mysqli_fetch_assoc.

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