Question

这是我的变量

$error=[];

$dbname=htmlspecialchars(trim($_POST["dbname"]));
$dbusername=htmlspecialchars(trim($_POST["dbusername"]));
$dbpassword=htmlspecialchars(trim($_POST["dbpassword"]));
$dbhost=htmlspecialchars(trim($_POST["dbhost"]));;
$debugging=$_POST["debugging"];

...  // i got such variables many some are not belong to post as well

我想像这样显示错误

if(empty($dbname){
echo $error['$dberro']="Hey you have missed the database name";
}
if(empty($dbusername){
echo $error['$dbusernameerror']="Hey you have missed the database user name";
}
....   // i have such code many

我有这40个变量，我怎么这么容易这样做..我在静态页面或其他一些php页面上显示

if (isset($error[$dberror])){
echo "$error[$dberror]";
}
... //i have such many

代码不是那么笨重，可能有比这更好的想法

我可以得到这些想法

Answer 1

你可以使用一个数组并通过它来检查..这样的东西：

$db_array = array(
'dbname' => htmlspecialchars(trim($_POST["dbname"])),
'dbusername' => htmlspecialchars(trim($_POST["dbusername"])),
etc..
etc..
);

foreach($db_array as $key => $value) {
  if(empty($value)) {
    echo "Hey you have missed: $key";
  }
}

编辑：按照jtmanteos评论进行修正

Answer 2

您可以创建第一个数组来存储变量及其描述另一个存储数据：

<?php
$error=[];
//data associate var and its description
$data[
    'dbname'=>'database name',
    'dbusername'=>'database user name',
    'dbpassword'=>'database password',
    'dbhost'=>'database host',
    'debugging'=>'debugging'
    ];

//values store the values in an array
$values['dbname']=htmlspecialchars(trim($_POST["dbname"]));
$values['dbusername']=htmlspecialchars(trim($_POST["dbusername"]));
$values['dbpassword']=htmlspecialchars(trim($_POST["dbpassword"]));
$values['dbhost']=htmlspecialchars(trim($_POST["dbhost"]));;
$values['debugging']=$_POST["debugging"];

//test values
foreach($data as $var=>$description){
    if(empty($values[$var]){
        echo $error[$var]="Hey you have missed the ".$description;
    }
}

Answer 3

这个怎么样：

<?php
    foreach($_POST as $key => $value) {
        $$key = htmlspecialchars(trim($_POST["dbname"]));
        if(empty($$key)) {
            echo "Hey you have missed: $key";
        }
    }
?>

PHP变量及其显示方式与一些学科

3 个答案: