PHP 启动：无法加载动态库“curl.so”Ubuntu

PHP 警告：PHP 启动：无法加载动态库 '/usr/lib/php/20131226/curl.so' - /usr/lib/php/20131226/curl.so：未定义的符号：zend_unset_property 在第 0 行的“未知”中

我使用的是 Ubuntu 14.04 LTS 和 PHP v5.6

同一台计算机中还有其他版本，但已启用。我尝试通过以下方式安装 cURLphp5php7php5.6

sudo apt-get install php5.6-curl

现在我得到

无法加载动态库 curl.so

运行后，我得到以下内容php -i | grep ini

root@ubuntu:/etc/php/5.6/apache2# php -i | grep ini
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/20131226/curl.so' - /usr/lib/php/20131226/curl.so: undefined symbol: zend_unset_property in Unknown on line 0
Configuration File (php.ini) Path => /etc/php/5.6/cli
Loaded Configuration File => /etc/php/5.6/cli/php.ini
Scan this dir for additional .ini files => /etc/php/5.6/cli/conf.d
Additional .ini files parsed => /etc/php/5.6/cli/conf.d/10-mysqlnd.ini,
/etc/php/5.6/cli/conf.d/10-opcache.ini,
/etc/php/5.6/cli/conf.d/10-pdo.ini,
/etc/php/5.6/cli/conf.d/15-xml.ini,
/etc/php/5.6/cli/conf.d/20-calendar.ini,
/etc/php/5.6/cli/conf.d/20-ctype.ini,
/etc/php/5.6/cli/conf.d/20-curl.ini,
/etc/php/5.6/cli/conf.d/20-dom.ini,
/etc/php/5.6/cli/conf.d/20-exif.ini,
/etc/php/5.6/cli/conf.d/20-fileinfo.ini,
/etc/php/5.6/cli/conf.d/20-ftp.ini,
/etc/php/5.6/cli/conf.d/20-gettext.ini,
/etc/php/5.6/cli/conf.d/20-iconv.ini,
/etc/php/5.6/cli/conf.d/20-json.ini,
/etc/php/5.6/cli/conf.d/20-mbstring.ini,
/etc/php/5.6/cli/conf.d/20-mysql.ini,
/etc/php/5.6/cli/conf.d/20-mysqli.ini,
/etc/php/5.6/cli/conf.d/20-pdo_mysql.ini,
/etc/php/5.6/cli/conf.d/20-phar.ini,
/etc/php/5.6/cli/conf.d/20-posix.ini,
/etc/php/5.6/cli/conf.d/20-readline.ini,
/etc/php/5.6/cli/conf.d/20-shmop.ini,
/etc/php/5.6/cli/conf.d/20-simplexml.ini,
/etc/php/5.6/cli/conf.d/20-sockets.ini,
/etc/php/5.6/cli/conf.d/20-sysvmsg.ini,
/etc/php/5.6/cli/conf.d/20-sysvsem.ini,
/etc/php/5.6/cli/conf.d/20-sysvshm.ini,
/etc/php/5.6/cli/conf.d/20-tokenizer.ini,
/etc/php/5.6/cli/conf.d/20-wddx.ini,
/etc/php/5.6/cli/conf.d/20-xmlreader.ini,
/etc/php/5.6/cli/conf.d/20-xmlwriter.ini,
/etc/php/5.6/cli/conf.d/20-xsl.ini
user_ini.cache_ttl => 300 => 300
user_ini.filename => .user.ini => .user.ini
init_command_executed_count => 0
init_command_failed_count => 0
com_init_db => 0
Classes => AppendIterator, ArrayIterator, ArrayObject, BadFunctionCallException, BadMethodCallException, CachingIterator, CallbackFilterIterator, DirectoryIterator, DomainException, EmptyIterator, FilesystemIterator, FilterIterator, GlobIterator, InfiniteIterator, InvalidArgumentException, IteratorIterator, LengthException, LimitIterator, LogicException, MultipleIterator, NoRewindIterator, OutOfBoundsException, OutOfRangeException, OverflowException, ParentIterator, RangeException, RecursiveArrayIterator, RecursiveCachingIterator, RecursiveCallbackFilterIterator, RecursiveDirectoryIterator, RecursiveFilterIterator, RecursiveIteratorIterator, RecursiveRegexIterator, RecursiveTreeIterator, RegexIterator, RuntimeException, SplDoublyLinkedList, SplFileInfo, SplFileObject, SplFixedArray, SplHeap, SplMinHeap, SplMaxHeap, SplObjectStorage, SplPriorityQueue, SplQueue, SplStack, SplTempFileObject, UnderflowException, UnexpectedValueException

这是实际的警告

PHP 警告：PHP 启动：无法加载动态库 '/usr/lib/php/20131226/curl.so' - /usr/lib/php/20131226/curl.so：未定义的符号：zend_unset_property 在第 0 行的“未知”中

还检查了cURL是否不起作用。任何帮助都非常感谢。