URequestTesterTrait.php

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<?php
 
namespace Ubiquity\utils\http\traits;
 
use Ubiquity\controllers\Startup;
 
class URequestTesterTrait {
 
    public static function filled($key): bool {
        return isset ( $_REQUEST [$key] ) && $_REQUEST [$key] != null;
    }
 
    public static function has($key): bool {
        return isset ( $_REQUEST [$key] );
    }
 
    public static function isAjax(): bool {
        return (isset ( $_SERVER ['HTTP_X_REQUESTED_WITH'] ) && ! empty ( $_SERVER ['HTTP_X_REQUESTED_WITH'] ) && strtolower ( $_SERVER ['HTTP_X_REQUESTED_WITH'] ) == 'xmlhttprequest');
    }
 
    public static function isPost(): bool {
        return $_SERVER ['REQUEST_METHOD'] === 'POST';
    }
 
    public static function isCrossSite(): bool {
        return \stripos ( $_SERVER ['HTTP_REFERER'], $_SERVER ['SERVER_NAME'] ) === FALSE;
    }
 
    public static function isJSON(): bool {
        $contentType = self::getContentType ();
        return \stripos ( $contentType, 'json' ) !== false;
    }
 
    public static function getContentType(): ?string {
        $headers = Startup::getHttpInstance ()->getAllHeaders ();
        if (isset ( $headers ['Content-Type'] )) {
            return $headers ['Content-Type'];
        }
        return null;
    }
}