title: PHP Startup: Unable to load dynamic library `curl.so` Ubuntu
body: <blockquote>
    <p>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</p>
  </blockquote>
  
  <p>I am using Ubuntu 14.04 LTS and PHP v5.6</p>
  
  <p>There are other versions in same machine <code>php5</code> and <code>php7</code> but <code>php5.6</code> has been enabled. I tried to install cURL by </p>
  
  <pre class="lang-bash prettyprint-override"><code>sudo apt-get install php5.6-curl
  </code></pre>
  
  <p>Now I am getting </p>
  
  <blockquote>
    <p>Unable to load dynamic library curl.so</p>
  </blockquote>
  
  <p>After running <code>php -i | grep ini</code> I get the following </p>
  
  <pre><code>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 =&gt; /etc/php/5.6/cli
  Loaded Configuration File =&gt; /etc/php/5.6/cli/php.ini
  Scan this dir for additional .ini files =&gt; /etc/php/5.6/cli/conf.d
  Additional .ini files parsed =&gt; /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 =&gt; 300 =&gt; 300
  user_ini.filename =&gt; .user.ini =&gt; .user.ini
  init_command_executed_count =&gt; 0
  init_command_failed_count =&gt; 0
  com_init_db =&gt; 0
  Classes =&gt; 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
  </code></pre>
  
  <p>And this is the actual warning </p>
  
  <blockquote>
    <p>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</p>
  </blockquote>
  
  <p>Also checked that cURL isn't working. Any kind of help is highly appreciated. </p>