解析错误：语法错误，意外的“？”拉拉韦尔

Question

当我尝试安装Laravel脚本时，我在Hostgator服务器上收到此错误！

 <function measure_angle_standard at 0x7fecda0947b8>
up slightly right -88.1  s/b tiny positive angle
point up  -90.0  s/b 0
up slightly left  -91.9  s/b ~359 degrees
point right  0.0  s/b 90
point left  180.0  s/b 270
point down  90.0  s/b 180


 <function measure_angle_0_360 at 0x7fecda040730>
up slightly right 271.9  s/b tiny positive angle
point up  270.0  s/b 0
up slightly left  268.1  s/b ~359 degrees
point right  0.0  s/b 90
point left  180.0  s/b 270
point down  90.0  s/b 180


 <function measure_angle_up_is_zero at 0x7fecda0940d0>
up slightly right 1.9  s/b tiny positive angle
point up  0.0  s/b 0
up slightly left  178.1  s/b ~359 degrees
point right  90.0  s/b 90
point left  90.0  s/b 270
point down  0.0  s/b 180

我认为此错误表明我没有使用PHP 7。

当我运行此命令时：

PHP Parse error: syntax error, unexpected '?' in vendor/laravel/framework/src/Illuminate/Foundation/helpers.php on line 233

它返回php -v

但在 phpinfo.php 中显示

PHP 5.6.30

有什么主意吗？