public function setCoreErrors($env, $errors = 0)
    {
        $this->swapArgs($env, $errors, $this->running_env, false);
        
        $this->errors[$env] = $errors;
        if (!$this->getCallback($env)) {
            $this->setCallback($env, $this->getDefaultCallback());
        }
        
        return $this;
    }
public function setCoreErrors($env, $errors = 0)
    {
        $this->swapArgs($env, $errors, $this->running_env, false);
        
        $this->errors[$env] = $errors;
        if (!$this->getCallback($env)) {
            $this->setCallback($env, $this->getDefaultCallback());
        }
        
        return $this;
    }
public function setCoreErrors ( $ env , $ errors = 0 ) { $ this -> swapArgs ( $ env , $ errors , $ this -> running_env , false ) ; $ this -> errors [ $ env ] = $ errors ; if ( ! $ this -> getCallback ( $ env ) ) { $ this -> setCallback ( $ env , $ this -> getDefaultCallback ( ) ) ; } return $ this ; }
Sets the core errors which will be handled

By default only a few fatal errors are handled, but you can specify exactly which
errors to handle with this method.

Uses the currently running environment when none is given.

Examples:
```php
$handler->setCoreErrors(E_ERROR | E_WARNING | E_DEPRECIATED);

$handler->setCoreErrors("live", E_ERROR | E_WARNING);

$handler->setCoreError("dev", E_ERROR | E_WARNING | E_NOTICE);
```

@param string|int $env    Name of the environment
@param int        $errors The errors to handle

@return $this
Sets the core errors which will be handled