如何回显用户输入的文本？ [复制]

Question

所以不是 echo "Invalid specialization entered. Please check your spelling.";

我想回复"[THE TEXT THAT THE USER ENTERED] is not a valid spec."

感谢所有帮助。如果我不清楚，如果您需要更多信息，请告诉我。

if (
$spec == "Protection" || $spec == "Arms" || $spec == "Fury" ||
$spec == "Shadow" || $spec == "Discipline" || $spec == "Holy" || 
$spec == "Frost" || $spec == "Fire" || $spec == "Arcane" ||
$spec == "Destruction" || $spec == "Demonology" || $spec == "Affliction" || 
$spec == "Subtlety" || $spec == "Combat" || $spec == "Assassination" || 
$spec == "Restoration" || $spec == "Feral" || $spec == "Balance" || $spec == "Guardian" ||
$spec == "Enhancement" || $spec == "Restoration" || $spec == "Elemental" ||
$spec == "Marksmanship" || $spec == "Beast Mastery" || $spec == "Survival")



{
    echo "<br>";
    echo "Valid spec entered.";
}


else {  
    echo "<br>";
    echo "Invalid specialization entered. Please check your spelling.";
}`

Answer 1

首先，不要做很多||，而是将它们插入一个数组并检查用户是否通过in_array插入其中一个：

$arrSpecs = array
(
    'Protection', 
    'Arms', 
    'Fury', 
    'Shadow', 
    'Discipline', 
    'Holy', 
    'Frost', 
    'Fire', 
    'Arcane', 
    'Destruction', 
    'Demonology', 
    'Affliction', 
    'Subtlety', 
    'Combat', 
    'Assassination', 
    'Restoration', 
    'Feral', 
    'Balance', 
    'Guardian', 
    'Enhancement', 
    'Restoration', 
    'Elemental', 
    'Marksmanship', 
    'Beast Mastery', 
    'Survival'
);

if(in_array($spec, $arrSpecs)
{
    echo "<br>";
    echo "Valid spec entered.";
}
else {  
    echo "<br>";
    echo "Invalid specialization entered ($spec). Please check your spelling.";
}`

请注意，如果指令 register_globals 设置为 off（默认从 PHP 4.2.0 开始），您必须根据表单中使用的方法通过 $_GET 或 $_POST 获取用户输入，例如：

$spec = !empty($_GET['spec']) ? $_GET['spec'] : '';