显示在 URL 中的空 GET 变量
这是我的表格:
<?php
echo '<form method="get" action="" name="formulaire">';
echo '<input type="text" name="info1" title="" value="" />';
echo '<input type="text" name="info2" title="" value="" />';
echo '<input type="text" name="info3" title="" value="" />';
echo '<input type="submit" value="Envoyer" />';
echo '</form>';
echo '$info1 = '.$_GET["info1"].'<br />';
echo '$info2 = '.$_GET["info2"].'<br />';
echo '$info3 = '.$_GET["info3"].'<br />';
?>
我的问题是提交后，所有的变量都显示在URL中，即使它们是空的.
My problem is that after submitting, all the variables are displayed in the URL, even if they are empty.
我希望非空变量仅显示在 URL 中.
I would like the non-empty variables ONLY to be displayed in the URL.
有没有办法用 PHP 做到这一点?
Is there a way of doing that with PHP ?
推荐答案
正如其他人所说，解决方案是在提交时使用 Javascript 更改表单.这是您使用 javascript 函数执行此操作的示例:
Like others have said, the solution is to use Javascript to change the form when its submited. Here is your example with a javascript function that does that:
<html>
<head>
<script type="text/javascript">
function myFunction()
{
var myForm = document.getElementById('form-id');
var allInputs = myForm.getElementsByTagName('input');
var input, i;
for(i = 0; input = allInputs[i]; i++) {
if(input.getAttribute('name') && !input.value) {
input.setAttribute('name', '');
}
}
}
</script>
</head>
<form id="form-id" method="get" action="" name="formulaire" onsubmit="myFunction()">
<input type="text" name="info1" title="" value="" />
<input type="text" name="info2" title="" value="" />
<input type="text" name="info3" title="" value="" />
<input type="submit" value="Envoyer" />
</form>
<?php
echo '$info1 = '.$_GET["info1"].'<br />';
echo '$info2 = '.$_GET["info2"].'<br />';
echo '$info3 = '.$_GET["info3"].'<br />';
?>
</html>
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