How can var_dump be used to troubleshoot mysqli_query() issues in PHP?

When troubleshooting mysqli_query() issues in PHP, var_dump can be used to inspect the results of the query and identify any errors or unexpected data. By using var_dump to output the result of mysqli_query, you can see the actual query result, any errors returned by MySQL, and the data structure of the result set. This can help pinpoint where the issue lies and guide you in fixing it. 

$query = "SELECT * FROM users";
$result = mysqli_query($conn, $query);

if (!$result) {
    var_dump(mysqli_error($conn));
} else {
    var_dump($result);
}

Keywords

var_dump mysqli_query troubleshooting PHP error detection

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