未定义的偏移错误 [英] Undefined offset error

问题描述

大家好，



我根据条件显示消息在我的表单中创建了两个按钮，但它给出了错误。



如果我点击press1（按钮）它不会返回错误

如果我点击Press2（按钮）它会返回错误。但我为此写了相同的代码



我可以知道我出错了吗？



我的代码是在php

hi all,

Im creating two buttons in my form based on condition displaying message but it's giving error.

If I click press1(button) it's not return error
If I click Press2(button) it's return error. but Im write same code for this

can I know were I went wrong?

my code is in php

<?php

if($_POST['1'])
{
    print "You have press 1";
}
else if($_POST['2'])
{
    print "You have press 2";
}

?>

in html

in html

<form method="post" action="<?php echo $_SERVER["PHP_SELF"]; ?>">
<input type="submit" value="Press 1" name="1" />
<input type="submit" value="Press 2" name="2" />
</form>

推荐答案

_POST [' 1']）
{
print 按下1;
}
else if（

_POST['1']) { print "You have press 1"; } else if(

_POST [' 2']）
{
print 你有按2;
}

？>

_POST['2']) { print "You have press 2"; } ?>

in html

in html

<form method="post" action="<?php echo

_SERVER [ < span class =code-attribute> PHP_SELF]; ？ > >
< 输入 < span class =code-attribute> type = submit value = 按1 名称 = 1 / >
< 输入 < span class =code-attribute> type = submit value = 按2 名称 = 2 / >
< / form >

_SERVER["PHP_SELF"]; ?>"> <input type="submit" value="Press 1" name="1" /> <input type="submit" value="Press 2" name="2" /> </form>

这篇关于未定义的偏移错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！