title: Function utf8_encode undefined
body: <p>I have Ubuntu 16.04 installed, which comes with PHP 7 by default; but I ended up installing PHP 5.6 as well, and I have apache using 5.6.</p>
  
  <p>When I went to run a project of mine, it told me the following:</p>
  
  <blockquote>
    <p>PHP Fatal error:  Call to undefined function utf8_encode()</p>
  </blockquote>
  
  <p>I read through a bunch of posts where others have had this issue, and tried installing different extensions; but nothing has helped.</p>
  
  <p>My understanding, was that that function would be packed with PHP (4,5,7) by default. </p>
  
  <p>Any ideas?</p>
  
  <p><strong>* Update *</strong></p>
  
  <p>I did try the following, and it came back false.</p>
  
  <pre><code>var_dump(is_callable('utf8_encode'));
  </code></pre>
  
  <p>Here are the installed mods/extensions:</p>
  
  <p>[PHP Modules]
  calendar
  Core
  ctype
  date
  dom
  ereg
  exif
  fileinfo
  filter
  ftp
  gettext
  hash
  iconv
  json
  libxml
  mbstring
  mhash
  mysql
  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
  xmlrpc
  xmlwriter
  xsl
  Zend OPcache
  zlib</p>
  
  <p>[Zend Modules]
  Zend OPcache</p>