<ol>
<li>Log in to <a href="https://www.domain.com/my-account/login">Account Manager</a><a href="https://www.domain.com/my-account/login">.</a>
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dcom-homeam.png" alt="Checkout Domain order" width="500" />
</li>
<li>On the left pane, click on Hosting.
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dom-account-manager-hosting-tab2.png" alt="Checkout Domain order" width="200" />
</li>
<li>Under Hosting Packages, click the MANAGE&nbsp;button next to the package you want to access.<img class="img-responsive" src="https://content.endurance.com/dcom/img/dcom-hosting-manage.png" alt="Checkout Domain order" width="500" /></li>
<li>Under Scripting Configuration, click on the Manage PHP Scripting.
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dom-acount-manager-scripting-config-manage-php-scripting.png" alt="Checkout Domain order" width="500" />
</li>
<li>Under PHP Scripting Config, access Manage php.ini.
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dom-account-manager-scripting-config-manage-phpini.png" alt="Checkout Domain order" width="500" />
</li>
<li>Locate the following block of code within your php.ini file:
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dom-account-manager-scripting-config-manage-phpini-details.png" alt="Checkout Domain order" width="500" />
</li>
<li>Just after 'disable_functions = ', write out the functions you want to disable (example: exec, passthru, popen). Here is a list of functions that are commonly disabled as a means to improve security: &nbsp;</li>
<ul>
<li>exec&nbsp;</li>
<li>passthru&nbsp;</li>
<li>shell_exec&nbsp;</li>
<li>system,&nbsp;</li>
<li>proc_open&nbsp;</li>
<li>popen&nbsp;</li>
<li>curl_exec&nbsp;</li>
<li>curl_multi_exec&nbsp;</li>
<li>parse_ini_file&nbsp;</li>
<li>show_source </li>
</ul>
<li>Click the Save button once you are done.
<img class="img-responsive" src="https://content.endurance.com/dcom/img/dom-account-manager-hosting-manage-php-script-save-reset-buttons.png" alt="Checkout Domain order" width="300" />
</li>
</ol>
<div class="alert alert-warning">Important: Some themes, plugins, and features for popular PHP-based website builders (such as WordPress) may rely on one or more of these functions. Disabling these functions may cause certain features to stop working (notably, some WordPress automatic backup plugins).</div>

The PHP coding language has a vast amount of core functions that allow it to support powerful website builders like WordPress. However, some of these core functions are also at risk of becoming back-doors through which hackers can gain access to your website. While it is incredibly difficult for hackers to abuse these core functions, it is still a good idea to disable any functions that are not necessary for the operation of your website.

Scripting: How to Disable PHP Functions