douyi1982 2016-08-25 12:46
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PHP注意:未定义索引:选择消息

I get always this error:

PHP Notice: Undefined index: selecting-message in /content-protection.php on line 390" and I have tried for many hours to solve this.

I hope someone can help me.

Line 390 Code:

$message = $_POST['selecting-message'];
$update  = mysqli_query($connect, "UPDATE `$table` SET enabled='$enabled', alert='$alert', message='$message' WHERE id=14");

echo '<meta http-equiv="refresh" content="0;url=content-protection">';
}
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4条回答 默认 最新

  • dongquxiao8545 2016-08-25 15:42
    关注

    The notice is telling you that the POST array does not contain an element with the key selecting-message. That could be an empty field on your form from the previous page, a typo or any number of other reasons WHY it doesn't exist.

    Simply check for a value instead of assuming it is there:

    if ( isset ( $_POST['selecting-message'] ) ) {
        $message = $_POST['selecting-message'];
        $update  = mysqli_query($connect, "UPDATE `$table` SET enabled='$enabled', alert='$alert', message='$message' WHERE id=14");
    
        echo '<meta http-equiv="refresh" content="0;url=content-protection">';
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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