Mysqli 查询插入问题答案

【问题标题】：Mysqli query insert issuesMysqli 查询插入问题
【发布时间】：2015-01-07 04:02:09
【问题描述】：

查询未正确插入有问题。

当我有电话时

mysqli_query($GLOBALS["___mysqli_ston"], "INSERT INTO emailerdata (`emailer_timestamp`,`emailer_promoID`,`emailer_name`,`emailer_username`,`emailer_usermd5`,`emailer_email`,`emailer_md5`,`emailer_reactionID`) VALUES ('$date','$promoID','$rec_info[2]','$row[1]','$usermd5','$rec_info[0]','$passmd5','$row[0]')") or die("Error: ". ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)). "     with query ". mysqli_query);

就它自己而言，它可以很好地插入。但是，当我尝试检查我的数据库中的电子邮件地址是否已在查询中使用该特定促销 ID 插入时，它不会插入。

我找不到查询有什么问题，确定它很简单，但在 or die 上没有显示错误？

$row_amt = mysqli_query($GLOBALS["___mysqli_ston"], "SELECT * from emailerdata where emailer_promoID='$promoID' and emailer_username='$downloadusername'");
    while($row4 !== mysqli_fetch_assoc($row_amt)) {     
    mysqli_query($GLOBALS["___mysqli_ston"], "INSERT INTO emailerdata (`emailer_timestamp`,`emailer_promoID`,`emailer_name`,`emailer_username`,`emailer_usermd5`,`emailer_email`,`emailer_md5`,`emailer_reactionID`) VALUES ('$date','$promoID','$rec_info[2]','$row[1]','$usermd5','$rec_info[0]','$passmd5','$row[0]')") or die("Error: ". ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)). "     with query ". mysqli_query); 
    }

非常感谢！

【问题讨论】：

将错误报告添加到文件顶部error_reporting(E_ALL); ini_set('display_errors', 1); mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
啊，谢谢你已经产生了整个世界的错误，非常感谢！

标签： php mysqli

【解决方案1】：

使用函数mysqli_num_rows检查查询返回的行数

$row_amt = mysqli_query($GLOBALS["___mysqli_ston"], "SELECT * from emailerdata where emailer_promoID='$promoID' and emailer_username='$downloadusername'");
$rowcount=mysqli_num_rows($row_amt);
if($rowcount == 0) {     
    mysqli_query($GLOBALS["___mysqli_ston"], "INSERT INTO emailerdata (`emailer_timestamp`,`emailer_promoID`,`emailer_name`,`emailer_username`,`emailer_usermd5`,`emailer_email`,`emailer_md5`,`emailer_reactionID`) VALUES ('$date','$promoID','$rec_info[2]','$row[1]','$usermd5','$rec_info[0]','$passmd5','$row[0]')") or die("Error: ". ((is_object($GLOBALS["___mysqli_ston"])) ? mysqli_error($GLOBALS["___mysqli_ston"]) : (($___mysqli_res = mysqli_connect_error()) ? $___mysqli_res : false)). "     with query ". mysqli_query); 
}else{
    echo 'Email is already registered.';
}

【讨论】：