strtoupper

Supported Versions: PHP 4, PHP 5, PHP 7, PHP 8
Make a string uppercase
strtoupper(string $string): string
        }

        foreach (
$event->getHeaders() as $header => $values) {

            foreach (
$values as $value) {

                
$key 'HTTP_' strtoupper(str_replace('-''_'$header));

                
$request->setCustomVar($key$value);

            }

        }
    {


        if (isset(
$event['httpMethod'])) {

            
$this->method strtoupper($event['httpMethod']);

        } elseif (isset(
$event['requestContext']['http']['method'])) {


            
$this->method strtoupper($event['requestContext']['http']['method']);
            $this->method strtoupper($event['httpMethod']);

        } elseif (isset(
$event['requestContext']['http']['method'])) {


            
$this->method strtoupper($event['requestContext']['http']['method']);

        } else {

            throw new 
InvalidLambdaEvent('API Gateway or ALB'$event);

        }