How can debugging techniques, such as var_dump, be utilized in PHP to identify errors in SQL queries or data manipulation?

When encountering errors in SQL queries or data manipulation in PHP, debugging techniques like var_dump can be used to inspect variables and identify issues. By using var_dump to display the contents of variables, developers can see the values being passed to SQL queries or manipulated data, helping to pinpoint where errors may be occurring. 

// Example of using var_dump to debug SQL query
$query = "SELECT * FROM users WHERE id = $user_id";
var_dump($query);
$result = mysqli_query($connection, $query);
if (!$result) {
    die('Error: ' . mysqli_error($connection));
}

Keywords

var_dump debugging techniques SQL queries data manipulation errors

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