librenms / librenms

html/pages/device/logs/syslog.inc.php

  <hr />

  <form method="post" action="">
  <div class="row">
    <div class="col-md-4">
      <input class="form-control" type="text" name="string" palaceholder="Search" id="string" value="<?php echo $_POST['string']; ?>">
    </div>
    <div class="col-md-4">
      <select name="program" class="form-control" id="program">
        <option value="">All Programs</option>
            <?php
            $datas = dbFetchRows('SELECT `program` FROM `syslog` WHERE device_id = ? GROUP BY `program` ORDER BY `program`', array($device['device_id']));
            foreach ($datas as $data) {
                echo "<option value='".$data['program']."'";
                if ($data['program'] == $_POST['program']) {
                    echo 'selected';
                }

                echo '>'.$data['program'].'</option>';
            }
            ?>
      </select>
    </div>
    <div class="col-md-4">
      <input class="btn btn-default" type="submit" value="Search">
    </div>
  </div>
</form>

<?php
 print_optionbar_end();

$param = array($device['device_id']);

if ($_POST['string']) {

This code seems to be duplicated across your project.

    $where   = ' AND msg LIKE ?';
    $param[] = '%'.$_POST['string'].'%';
}

if ($_POST['program']) {
    $where  .= ' AND program = ?';
    $param[] = $_POST['program'];
}

$sql  = "SELECT *, DATE_FORMAT(timestamp, '".$config['dateformat']['mysql']['compact']."') AS date from syslog WHERE device_id = ? $where";
$sql .= ' ORDER BY timestamp DESC LIMIT 1000';
echo '      <div class="panel panel-default panel-condensed">
              <div class="panel-heading">
                <strong>Syslog entries</strong>
              </div>
              <table class="table table-hover table-condensed table-striped">';
foreach (dbFetchRows($sql, $param) as $entry) {
    unset($syslog_output);
    include 'includes/print-syslog.inc.php';
    echo $syslog_output;
}

echo '        </table>
            </div>';
$pagetitle[] = 'Syslog';