我有一个PHP脚本，它正在处理一些表单数据（通过发布回自己），并在表单中显示相关的表单数据以及由此产生的计算。我遇到问题的相关代码如下所示：
代码的第一位：
if ($_POST["country"] == "select") {
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
}
else {
$country = ($_POST["country"]);
}
代码的第二位如下。请注意，如果输入zip字段的数据不是5位邮政编码，我的意图是触发一条错误消息：
if (empty($_POST["zip"])) {
if ($country == "United States") {
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
}
else {
if ($country == "United States") {
$zipCode = test_input($_POST["zip"]);
if (!preg_match("/^[0-9]{5}$/",$zipCode)){
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
//$zip="";
}
}
}
}
邮政编码表格中的相关代码：
<input id="zip" type="text" name="zip" placeholder="Enter 5-digit zip code" value="<?php echo $zipCode;?>" />
关于表单数据的处理，邮政编码无法正常工作：
- if（空（（$POST["zip"]）；这段代码工作正常，并在表单提交时抛出正确的错误
- 我的RegEx似乎不起作用，因为如果任何类型的数据被放入zip字段，它都不会抛出错误，并表明所有数据都已正确提交
- 在"成功"处理时，不会显示$zipCode字段
很明显，我的逻辑/表达有问题，但我已经看了一段时间了。如果有人有什么建议，我们将不胜感激。
干杯！Mike
让我们格式化代码，看看我们正在处理什么：
if (empty($_POST["zip"])) {
if ($country == "United States") { //WHAT? Then if you're from US you're always going to hit this part
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
} else {
if ($country == "United States") { //this is never going to hit because of that top part
$zipCode = test_input($_POST["zip"]);
if (!preg_match("/^[0-9]{5}$/", $zipCode)) {
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
//$zip="";
}
}
}
}
希望这能帮助你，你真的需要去掉顶部。。。
if (empty($_POST["zip"])) { //you can add && $country == "United States" here if you want for exclusive logic, like if other countries don't *require* the zip
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
} else {
if ($country == "United States") {
$zipCode = test_input($_POST["zip"]);
if (!preg_match("/^[0-9]{5}$/", $zipCode)) {
$formResponse = "Some data was incorrectly entered or missing. Please try again.";
//$zip="";
}
}
}