很简单的,给一个例子。 方法一: $sql= "select * form abc"$result=mysql_query($sql);$row=mysql_fetch_array($result);if(empty($row))//开始判断是够为空{echo"null"; }else{echo"not null"; } 方法二: $sql= "select * form abc"$result=mysql_query($sql);$row=mysql_fetch_array($resu...
$result = mysqli_query($conn, $sql); if(mysqli_num_rows($result) > 0) { // 数据库中存在符合条件的记录 // 可以进行相应的操作 } else { // 数据库中不存在符合条件的记录 // 可以进行其他操作 } “` 2. 使用COUNT(*)函数来检查数据的数目。COUNT(*)函数用于计算满足特定条件的记录的数目,...
mysqli_result::fetch_object -- mysqli_fetch_object— Fetch the next row of a result set as an object说明 面向对象风格 public mysqli_result::fetch_object(string $class = "stdClass", array $constructor_args = []): object|null|false 过程化风格 mysqli_fetch_object(mysqli_result $result,...
// 参见 mysql_result(), mysql_fetch_array(), mysql_fetch_row() 等。 while ($row=mysql_fetch_assoc($result)) { echo$row['firstname']; echo$row['lastname']; echo$row['address']; echo$row['age']; } // 释放关联结果集的资源 // 在脚本结束的时候会自动进行 mysql_free_result($res...
Fix GH-11550: MySQL Statement has a empty query result when the response field has changed, also Segmentation fault#11551 Closed kamil-tekielaclosed this ascompletedAug 4, 2023 timnoltementioned this issueSep 1, 2023 Sign up for freeto join this conversation on GitHub. Already have an account...
$result = $sql->fetch();if($result) {if(!fs_director::CheckForEmptyValue($result['tr_'. $lang .'_tx'])) {return$result['tr_'. $lang .'_tx']; }else{returnstripslashes($message); } } }if(!fs_director::CheckForEmptyValue($message) && $lang =="en") { ...
if($page<1||empty($page)){$page=1;} if($page>$pagecount){$page=$pagecount;} $offset=($page-1)*$pagesize;//行偏移开始数 $result=mysql_query("select * from ly limit $offset,$pagesize"); if(mysql_num_rows($result)=="0"){echo '无记录.';exit;} ...
ThinkPHP 是一个免费开源的,快速、简单的面向对象的 轻量级PHP开发框架 ,遵循Apache2开源协议发布,是为了敏捷WEB应用开发和简化企业应用开发而诞生的。ThinkPHP从诞生以来一直秉承简洁实用的设计原则,在保持出色的性能和至简的代码的同时,也注重易用性。并且拥有众多的
functiongetDomainBeid(){global $_GP;$system_store=mysqld_select('SELECT id,isclose FROM '.table('system_store')." where (`website`=:website1 or `website`=:website2) and `deleted`=0 ",array(":website1"=>WEB_WEBSITE,":website2"=>'www.'.WEB_WEBSITE));if(empty($system_store...
You know how to check for a false value, though, so you can add this code to handle problems: <?php // All your existing database connection code $result = mysql_query("SHOW TABLES;"); if ($result === false) { die("Error in listing tables: " . mysql_error() . ""); } ?