inc_functions.php

<?php

function getOutput($sPhpcode){
    global $renderAdminLTE;
    $sOut = '';

    eval("\$sOut=$sPhpcode;");
    return $sOut;
}

function showExample($sPhpcode){
    // global $renderAdminLTE;
    $sOut = getOutput($sPhpcode);

    return '
        <table class="table">
            <thead>
                <tr>
                    <th>Source</th>
                    <th>Output</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                <td>
                    <pre class="highlight">'.
                        str_replace(
                            ['array (', '))'], 
                            ['array (<span class="params">', '</span>))'], 
                            htmlentities($sPhpcode))
                        .'</pre>
                </td>
                <td>
                    '.$sOut.'<br><br>
                    <pre>'.
                        str_replace(
                            ['&gt;', '&lt;'], 
                            ['&gt;<span class="output">', '</span>&lt;'], 
                            htmlentities(str_replace([">", "</", "\n\n" ], [">\n", "\n</", "\n"], $sOut))
                        )
                        .'</pre>
                </td>
                </tr>
            </tbody>
        </table>
    
    ';
}