Php 分析错误：语法错误，意外'；常数'；（T_CONST），Laravel项目中的预期变量（T_variable）

在Bluehost cPanel中上传后，我的Laravel项目中出现以下错误。但在本地服务器中没有错误

分析错误：语法错误，意外的'const'（T_const），应为变量（T_variable）

这是密码

<?php
namespace Doctrine\DBAL;
use Doctrine\DBAL\Driver\ServerInfoAwareConnection;
use Doctrine\DBAL\Exception\InvalidArgumentException;
use Closure;
use Exception;
use Doctrine\DBAL\Types\Type;
use Doctrine\DBAL\Driver\Connection as DriverConnection;
use Doctrine\Common\EventManager;
use Doctrine\DBAL\Cache\ResultCacheStatement;
use Doctrine\DBAL\Cache\QueryCacheProfile;
use Doctrine\DBAL\Cache\ArrayStatement;
use Doctrine\DBAL\Cache\CacheException;
use Doctrine\DBAL\Driver\PingableConnection;
use Throwable;
use function array_key_exists;
use function array_merge;
use function func_get_args;
use function implode;
use function is_int;
use function is_string;
use function key;
class Connection implements DriverConnection
{

public const TRANSACTION_READ_UNCOMMITTED = TransactionIsolationLevel::READ_UNCOMMITTED;

public const TRANSACTION_READ_COMMITTED = TransactionIsolationLevel::READ_COMMITTED;

public const TRANSACTION_REPEATABLE_READ = TransactionIsolationLevel::REPEATABLE_READ;

public const TRANSACTION_SERIALIZABLE = TransactionIsolationLevel::SERIALIZABLE;

public const PARAM_INT_ARRAY = ParameterType::INTEGER + self::ARRAY_PARAM_OFFSET;

public const PARAM_STR_ARRAY = ParameterType::STRING + self::ARRAY_PARAM_OFFSET;

const ARRAY_PARAM_OFFSET = 100;

protected $_conn;

protected $_config;

protected $_eventManager;

protected $_expr;

private $_isConnected = false;

private $autoCommit = true;

private $_transactionNestingLevel = 0;

private $_transactionIsolationLevel;

private $_nestTransactionsWithSavepoints = false;

private $_params = [];

private $platform;

protected $_schemaManager;

protected $_driver;

private $_isRollbackOnly = false;

protected $defaultFetchMode = FetchMode::ASSOCIATIVE;

---

指定类常量可见性的功能仅在PHP7.1中添加，从

注意：

从PHP7.1.0开始，类常量允许使用可见性修饰符

因此，在PHP7.0服务器上

public const TRANSACTION_READ_UNCOMMITTED ...

行上不应该有
public
。它还说

类常量的默认可见性为public

因此，无论如何都不需要public。
您似乎想要定义一个常量变量

我的指示是：

const CONSTANT = 'jkl';

我得到的错误是：

syntax error, unexpected 'const' (T_CONST) in ...

我将该指示改为：

define('CONSTANT', 'jkl');
echo CONSTANT;

输出：

jkl

“define”方法的语法：

define('variable_name', 'value_of_the_variable', [case-insensitive_constant_name = true/false]);

例如

define('CONSTANT3', 'ghi', true);
echo CONSTANT3;
define('constant3', 'ghi'); //Defining 'constant3' again will give an error.

但是

始终记住，正则变量应在其名称前使用“$”进行寻址，但常量变量应直接寻址，如我在上面的代码中所示。
我投票重新打开此问题，因为所谓的重复问题没有解决此错误消息。简单搜索“T_CONST”就会发现这一点。从安装的composer软件包中获取此错误，我们不想降级，因此升级了php:e.g:，
define('CONSTANT3', 'ghi');
echo CONSTANT3;
define('constant3', 'ghi'); //This won't give an error.
echo constant3;