Peter M. Groen / knowledgetree

<?php

error_reporting(E_ALL);

function get_php_setting($val) {
    $r =  (ini_get($val) == '1' ? 1 : 0);
    return $r ? 'ON' : 'OFF';
}

function boolSetting($name, $setting, $preferred, $red = true, $message = "") {
    $current = get_php_setting($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    if ($current == $preferred) {
        $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
    } else {
        if ($red === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        } else {
            $ret .= sprintf('<font color="orange"><b>%s</b></font>', $current);
        }
        if ($message) {
            $ret .= ' (' . $message . ')';
        }
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function stringSetting($name, $setting, $preferred, $red = true, $message = "") {
    $current = ini_get($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    if ($current == $preferred) {
        $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
    } else {
        if ($red === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        } else {
            $ret .= sprintf('<font color="orange"><b>%s</b></font>', $current);
        }
        if ($message) {
            $ret .= ' (' . $message . ')';
        }
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function emptySetting($name, $setting) {
    $current = ini_get($setting);
    $ret = sprintf('<tr><td>%s (%s)</td><td>unset</td><td>', $name, $setting);
    if (($current === false) or ($current === "")) {
        $ret .= sprintf('<font color="green"><b>unset</b></font>');
    } else {
        $ret .= sprintf('<font color="red"><b>Set: %s</b></font>', $current);
    }
    $ret .= "</td></tr>\n";
    return $ret;
}

function writablePath($name, $path) {
    $ret = sprintf('<tr><td>%s (%s)</td><td>', $name, $path);
    if (is_writable('../' . $path)) {
        $ret .= sprintf('<font color="green"><b>Writeable</b></font>');
    } else {
        $ret .= sprintf('<font color="red"><b>Unwriteable</b></font>');
    }
    return $ret;
}

function prettySizeToActualSize($pretty) {
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'G') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024 * 1024;
    }
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'M') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024;
    }
    if (strtoupper(substr($pretty, strlen($pretty) - 1)) == 'K') {
        return (int)substr($pretty, 0, strlen($pretty)) * 1024 * 1024;
    }
    return (int)$pretty;
}

function prettySize($v) {
    $v = (float)$v;
    foreach (array('B', 'K', 'M', 'G') as $unit) {
        if ($v < 1024) {
            return $v . $unit;
        }
        $v = $v / 1024;
    }
}

function get_php_int_setting($val) {
    $r = ini_get($val);
    if ($r === false) {
        return $r;
    }
    return prettySizeToActualSize($r);
}

function bigEnough($name, $setting, $preferred, $bytes = false, $red = true) {
    $current = get_php_int_setting($setting);
    if ($bytes === true) {
        $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, prettySize($preferred));
    } else {
        $ret = sprintf('<tr><td>%s (%s)</td><td>%s</td><td>', $name, $setting, $preferred);
    }

    if ($current === false) {
        $ret .= '<font color="green"><b>unset</b></font>';
    } else if ($current >= $preferred) {
        if ($bytes === true) {
            $ret .= sprintf('<font color="green"><b>%s</b></font>', prettySize($current));
        } else {
            $ret .= sprintf('<font color="green"><b>%s</b></font>', $current);
        }
    } else {
        if ($bytes === true) {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', prettySize($current));
        } else {
            $ret .= sprintf('<font color="red"><b>%s</b></font>', $current);
        }
    }

    $ret .= "</td></tr>\n";
    return $ret;
}

function must_extension_loaded($ext, $message = "") {
    if (extension_loaded($ext)) {
        return '<b><font color="green">Available</font></b>';
    }
    if ($message) {
        return '<b><font color="red">Unavailable</font></b> (' .  $message . ')';
    }
    return '<b><font color="red">Unavailable</font></b>';
}
function can_extension_loaded($ext, $message = "") {
    if (extension_loaded($ext)) {
        return '<b><font color="green">Available</font></b>';
    }
    if ($message) {
    return '<b><font color="orange">Unavailable</font></b> (' . $message . ')';
    }
    return '<b><font color="orange">Unavailable</font></b>';
}

$phpversion4 = phpversion() < '4' ? '<b><font color="red">No</font></b> <small>(You need at least PHP 4)</small>' : '<b><font color="green">Yes</font></b>';
$phpversion43 = phpversion() < '4.3' ? '<b><font color="orange">No</font></b> <small>(PHP 4.3 is recommended)</small>' : '<b><font color="green">Yes</font></b>';
$phpversion5 = phpversion() >= '5' ? '<b><font color="red">No</font></b> <small>(KnowledgeTree does not yet work with PHP5)</small>' : '<b><font color="green">Yes</font></b>';

?>
<html>
  <head>
    <title>KnowledgeTree Checkup</title>
    <style>
th { text-align: left; }
    </style>
  </head>

  <body>

<h1>KnowledgeTree Checkup</h1>

<p>This checkup allows you to check that your environment is ready to
support a KnowledgeTree installation, and that you can proceed to
configure your system.  Red items are things to fix.  Orange items means
you may not be having the ultimate experience unless the support is
added.  Green items means you're ready to go in this area.  You can
check back here to see if anything has changed in your environment if
you have any problems.</p>

<h2>PHP version and extensions</h2>

<p>This relates to your PHP installation environment - which version of
PHP you are running, and which modules are available.</p>

<table width="100%">
  <tbody>
    <tr>
      <th>PHP version 4.3 or above</th>
      <td><?=$phpversion4?></td>
    </tr>
    <tr>
      <th>PHP version below 5</th>
      <td><?=$phpversion5?></td>
    </tr>
    <tr>
      <th>Session support</th>
      <td><?=must_extension_loaded('session');?></td>
    </tr>
    <tr>
      <th>MySQL support</th>
      <td><?=must_extension_loaded('mysql');?></td>
    </tr>
    <tr>
      <th>Gettext support</th>
      <td><?=can_extension_loaded('gettext', "Only needed for using non-English languages");?></td>
    </tr>
    <tr>
      <th>Fileinfo support</th>
      <td><?=can_extension_loaded('fileinfo', "Provides better file identification support - not necessary if you use file entensions");?></td>
    </tr>
  </tbody>
</table>

<h2>PHP configuration</h2>

<p>This relates to the configuration of PHP on your system.</p>

<h3>Recommended settings</h3>

<table width="50%">
  <thead>
    <tr>
      <th>Configuration option</th>
      <th>Recommended value</th>
      <th>Current value</th>
    </tr>
  </thead>
  <tbody>
<?=boolSetting('Safe Mode','safe_mode','OFF')?>
<?=boolSetting('Display Errors','display_errors','ON', false, "Will be set correctly anyway.")?>
<?=boolSetting('Display Startup Errors','display_startup_errors','ON', false, "Will be set correctly anyway.")?>
<?=boolSetting('File Uploads','file_uploads','ON')?>
<?=boolSetting('Magic Quotes GPC','magic_quotes_gpc','OFF', false, "Quotes will be removed; not optimal")?>
<?=boolSetting('Magic Quotes Runtime','magic_quotes_runtime','OFF')?>
<?=boolSetting('Register Globals','register_globals','OFF', false, "Globals will be removed; not optimal, may be a security risk")?>
<?=boolSetting('Output Buffering','output_buffering','OFF')?>
<?=boolSetting('Session auto start','session.auto_start','OFF')?>
<?=emptySetting('Automatic prepend file','auto_prepend_file')?>
<?=emptySetting('Automatic append file','auto_append_file')?>
<?=stringSetting('Default MIME type', 'default_mimetype', 'text/html')?>
  </tbody>
</table>

<h3>Limits</h3>

<table width="50%">
  <thead>
    <tr>
      <th>Configuration option</th>
      <th>Recommended value</th>
      <th>Current value</th>
    </tr>
  </thead>
  <tbody>
<?=bigEnough('Maximum POST size', 'post_max_size', 8 * 1024 * 1024, true)?>
<?=bigEnough('Maximum upload size', 'upload_max_filesize', 8 * 1024 * 1024, true)?>
<?=bigEnough('Memory limit', 'memory_limit', 8 * 1024 * 1024, true)?>
<?=""; # bigEnough('Maximum execution time', 'max_execution_time', 30)?>
<?=""; # bigEnough('Maximum input time', 'max_input_time', 60)?>
  <tbody>
</table>


<h3>Paths</h3>
<table width="50%">
  <tbody>
    <tr>
      <td class="item">
      Session save path
      </td>
      <td align="left">
      <b><?php echo (($sp=ini_get('session.save_path'))?$sp:'Not set'); ?></b>,
      <?php echo is_writable( $sp ) ? '<b><font color="green">Writeable</font></b>' : '<b><font color="red">Unwriteable</font></b>';?>
      </td>
    </tr>
    <tr>
      <td class="item">
      Upload temporary path
      </td>
      <td align="left">
      <b><?php echo (($sp=ini_get('upload_tmp_dir'))?$sp:'Not set'); ?></b>
      <?php if ($sp) { echo ', ' . is_writable( $sp ) ? '<b><font color="green">Writeable</font></b>' : '<b><font color="red">Unwriteable</font></b>';} ?>
      </td>
    </tr>
  </tbody>
</table>

<h2>Filesystem</h2>

<table width="50%">
  <tbody>
<?=writablePath('Log directory', 'log')?>
  </tbody>
</table>

  
  </body>
</html>