How Can I Effectively Handle Errors in MySQLi Prepared Statements?

Error Reporting in MySQLi Prepared Statements

When working with MySQLi, understanding error reporting is crucial. This article delves into the nuances of the 'prepare' statement's return value and explores the need for additional error handling.

The return value of 'prepare' merely indicates whether the SQL statement preparation succeeded. To detect execution errors, further measures are necessary. Replacing the 'execute' call with the following code ensures execution errors are flagged:

if($stmt_test->execute()) {
  $errorflag = true;
}

Additionally, after statement execution, checking for 'errno' and resetting 'errorflag' if non-zero provides comprehensive error capture:

if($stmt_test->errno) {
  $errorflag = true;
}

However, a more concise and comprehensive approach is to enable error reporting using the following line in the connection code:

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);

This setting ensures that every error is reported as a PHP Exception, eliminating the need for meticulous manual error checks.

$stmt = $mysqli->prepare("INSERT INTO testtable VALUES (?,?,?)");
$stmt->bind_param('iii', $x, $y, $z);
$stmt->execute();

With proper PHP error reporting configuration, errors will be displayed or logged as per the development or production environment settings.

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