Bitpay\Util\Util::checkRequirements PHP Метод

    public static function checkRequirements()
    {
        $requirements = array();
        // PHP Version
        if (!defined('PHP_VERSION_ID')) {
            $version = explode('.', PHP_VERSION);
            define('PHP_VERSION_ID', $version[0] * 10000 + $version[1] * 100 + $version[2]);
        }
        if (PHP_VERSION_ID < 50400) {
            $requirements['PHP'] = 'Your PHP version, ' . PHP_VERSION . ', is too low. PHP version >= 5.4 is required.';
        } else {
            $requirements['PHP'] = true;
        }
        // Mcrypt Extension
        if (!extension_loaded('mcrypt')) {
            $requirements['Mcrypt'] = 'The Mcrypt PHP extension could not be found.';
        } else {
            $requirements['Mcrypt'] = true;
        }
        // OpenSSL Extension
        if (!extension_loaded('openssl')) {
            $requirements['OpenSSL'] = 'The OpenSSL PHP extension could not be found.';
        } else {
            $requirements['OpenSSL'] = true;
        }
        // JSON Extension
        if (!extension_loaded('json')) {
            $requirements['JSON'] = 'The JSON PHP extension could not be found.';
        } else {
            $requirements['JSON'] = true;
        }
        // cURL Extension
        if (!extension_loaded('curl')) {
            $requirements['cURL'] = 'The cURL PHP extension could not be found.';
        } else {
            $requirements['cURL'] = true;
            $curl_version = curl_version();
            $ssl_supported = $curl_version['features'] & CURL_VERSION_SSL;
            if (!$ssl_supported) {
                $requirements['cURL.SSL'] = 'The cURL PHP extension does not have SSL support.';
            } else {
                $requirements['cURL.SSL'] = true;
            }
        }
        // Math
        if (!extension_loaded('bcmath') && !extension_loaded('gmp')) {
            $requirements['Math'] = 'Either the BC Math or GMP PHP extension is required.  Neither could be found.';
        } else {
            $requirements['Math'] = true;
        }
        return $requirements;
    }

 public function testCheckRequirements()
 {
     $requirements = Util::checkRequirements();
     // PHP Version
     if (!defined('PHP_VERSION_ID')) {
         $version = explode('.', PHP_VERSION);
         define('PHP_VERSION_ID', $version[0] * 10000 + $version[1] * 100 + $version[2]);
     }
     if (PHP_VERSION_ID >= 50400) {
         $this->assertTrue($requirements['PHP']);
     } else {
         $this->assertTrue(is_string($requirements['PHP']));
     }
     // Mcrypt Extension
     if (extension_loaded('mcrypt')) {
         $this->assertTrue($requirements['Mcrypt']);
     } else {
         $this->assertTrue(is_string($requirements['Mcrypt']));
     }
     // OpenSSL Extension
     if (extension_loaded('openssl')) {
         $this->assertTrue($requirements['OpenSSL']);
     } else {
         $this->assertTrue(is_string($requirements['OpenSSL']));
     }
     // JSON Extension
     if (extension_loaded('json')) {
         $this->assertTrue($requirements['JSON']);
     } else {
         $this->assertTrue(is_string($requirements['JSON']));
     }
     // cURL Extension
     if (extension_loaded('curl')) {
         $this->assertTrue($requirements['cURL']);
         $curl_version = curl_version();
         $ssl_supported = $curl_version['features'] & CURL_VERSION_SSL;
         if ($ssl_supported) {
             $this->assertTrue($requirements['cURL.SSL']);
         } else {
             $this->assertTrue(is_string($requirements['cURL.SSL']));
         }
     } else {
         $this->assertTrue(is_string($requirements['cURL']));
         $this->assertTrue(is_string($requirements['cURL']));
     }
     // Math
     if (extension_loaded('bcmath') || extension_loaded('gmp')) {
         $this->assertTrue($requirements['Math']);
     } else {
         $this->assertTrue(is_string($requirements['Math']));
     }
 }