title: Call to undefined function simplexml_load_file()
body: <p>I have php 7.0 running on my ubuntu server.</p>
  
  <p>php -m command says:</p>
  
  <pre>
  
  [PHP Modules]
  calendar
  Core
  ctype
  curl
  date
  dom
  exif
  fileinfo
  filter
  ftp
  gd
  gettext
  hash
  iconv
  intl
  json
  libxml
  mbstring
  mcrypt
  mysqli
  mysqlnd
  openssl
  pcntl
  pcre
  PDO
  pdo_mysql
  Phar
  posix
  readline
  Reflection
  session
  shmop
  SimpleXML
  sockets
  SPL
  standard
  sysvmsg
  sysvsem
  sysvshm
  tokenizer
  wddx
  xml
  xmlreader
  xmlwriter
  xsl
  Zend OPcache
  zip
  zlib
  
  </pre>
  
  <p>But still when I run my website, its log says "<strong>PHP Fatal error:  Call to undefined function simplexml_load_file()</strong>"</p>