title: Ensure that PHP is compiled with php_mbstring.dll enabled
body: <p>I'm currently experiencing error on my application using php. here is the error message</p>
  
  <pre><code>Error - mPDF requires mb_string functions. Ensure that PHP is compiled with php_mbstring.dll enabled.
  </code></pre>
  
  <p>I'm using third party library to generate pdf file (MPDF). It works fine on my loaclhost (windows) but when we deploy it on the linux server, it throws the above error.</p>
  
  <p>Can anyone help me on what's going on and how could I fix it. It seems that the php_mbstring.dll is missing on our linux server configuration.</p>