如果在 PHP 中使用其他程序需要有关此方面的帮助
[英]Need help regarding this if else program in PHP
问题描述
<HTML>
<body>
<?php
echo "<H4>Are you a Male</h4>"
?>
<form action ="ifstat.php" method ="post">
Enter Please: <input type="text" name="val1">
<input type ="submit" >
<input type ="reset">
</form>
<?php
$isMale=$_POST["val1"];
if($isMale =="y" || "yes"){
echo("You are a Male");
} elseif($isMale =="n" || "no") {
echo("You are a female");
} else{
echo("Invalid entry");
}
?>
</body>
</html>
So, this is my program code.
所以，这是我的程序代码。 I always keep on getting You are a Male as the output even though I type in "n" or some other value rather than y.尽管我输入了“n”或其他值而不是 y，但我总是继续将 You are a Male 作为输出。 What's wrong with the code here?这里的代码有什么问题？
Here is the photo of the output https://imgur.com/a/PPH49GK这是输出的照片https://imgur.com/a/PPH49GK
2 个解决方案
解决方案1
1 已采纳 2019-12-31 08:14:15
You need to change your condition formatting from if($isMale =="y" || "yes"){ to if($isMale =="y" || $isMale =="yes"){您需要将条件格式从if($isMale =="y" || "yes"){更改为if($isMale =="y" || $isMale =="yes"){
<HTML>
<body>
<?php
echo "<H4>Are you a Male</h4>"
?>
<form action ="ifstat.php" method ="post">
Enter Please: <input type="text" name="val1">
<input type ="submit" >
<input type ="reset">
</form>
<?php
$isMale=$_POST["val1"];
if($isMale =="y" || $isMale =="yes"){
echo("You are a Male");
} elseif($isMale =="n" || $isMale =="no") {
echo("You are a female");
} else{
echo("Invalid entry");
}
?>
</body>
</html>
解决方案2
1 2019-12-31 08:16:57
In your if statements....在你的if语句中......
if($isMale =="y" || "yes" ){
the || "yes" || "yes" || "yes" isn't valid and will always (in this case) evaluate to true. || "yes"是无效的，并且总是（在这种情况下）评估为真。
You also don't check if anything has been entered before processing this, so normally you would do a check of if something is set (ie has the forma been submitted) and then do the processing...在处理此之前，您也不检查是否输入了任何内容，因此通常您会检查是否设置了某些内容（即是否已提交表单），然后进行处理...
<?php
if (isset($_POST["val1"])) {
$isMale=$_POST["val1"];
if($isMale =="y" || $isMale =="yes"){
echo("You are a Male");
} elseif($isMale =="n" || $isMale =="no") {
echo("You are a female");
} else {
echo("Invalid entry");
}
}
?>
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