What steps can be taken to troubleshoot and debug PHP scripts that do not display errors or warnings in the browser when executed?

When PHP scripts do not display errors or warnings in the browser when executed, it is likely that error reporting is disabled in the PHP configuration. To troubleshoot and debug this issue, you can enable error reporting in the PHP script itself by adding the following line of code at the beginning of your script: 

```php
error_reporting(E_ALL);
ini_set('display_errors', 1);
```

This will ensure that errors and warnings are displayed in the browser when the script is executed.

Keywords

PHP error reporting debugging display_errors log_errors

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