How can error_reporting settings impact the functionality of PHP header() function?

Error_reporting settings can impact the functionality of the PHP header() function because if there are any PHP errors or warnings generated before the header() function is called, it will result in an error message like "Cannot modify header information - headers already sent". To solve this issue, you can set the error_reporting level to exclude warnings and notices, or you can use the ob_start() function to buffer the output and prevent any headers from being sent prematurely. 

// Set error reporting level to exclude warnings and notices
error_reporting(E_ERROR | E_PARSE);

// Or use output buffering to prevent headers from being sent prematurely
ob_start();

// Your PHP code here

// Call the header function
header('Location: example.php');

// Flush the output buffer
ob_end_flush();

Keywords

error_reporting PHP header() functionality impact

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