Question

我无法检查数据库中是否存在行，如果没有显示消息。代码如下。我需要一些帮助。

<?php
    $result = mysqli_query($mysqli, "SELECT client_cv FROM formular_client WHERE id = '$id'"); 
   if (mysqli_num_rows($result) > 0){
       echo "<a href='../cv/" . $rows['client_cv'] . "' target='_blank' class='btn btn-lg btn-primary'><span class='glyphicon glyphicon-download-alt'></span> Descarca CV</a>";
   } else {
       echo "<a href='#' target='_blank' class='btn btn-lg btn-primary'><span  class='glyphicon glyphicon-download-alt'></span> Fara CV</a>";
   }
?>

Answer 1

如果您想根据$res= $this->property_model->get_all_array("SELECT reg_date as date,f_name,id as id from register order by reg_date desc"); $res1= $this->property_model->get_all_array("SELECT payment_date as date,history_id,r_id as id from payment_history order by payment_date desc"); $data['activity'] = array_merge($res,$res1); foreach ($activity as $key => $row) { $volume[$key] = $row['date']; } // Sort the data with volume descending, edition ascending // Add $data as the last parameter, to sort by the common key array_multisort($volume, SORT_DESC, $activity);是否有值显示不同的链接，请尝试使用

client_cv

检查数据库中是否存在行，如果不显示消息

1 个答案: