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这个问题出在那里？

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Jun 23, 2016 pm 02:00 PM

<body><form action="index.php" method="post">输入A：<input type="text" name="c"/><br>输入B：<input type="text" name="d"/><input type="submit" value="Submit"/></form><?php	function jisuan(&$a,&$b){		$c=$a+$b;		echo 'a+b='.$c."<br/>";	}	if(isset($_POST['c']) && isset($_POST['d']))		{			$x=$_POST['c'];			$y=$_POST['d'];			jisuan($x,$y);		}	else 		echo "结果为0！";?></body>

一直提示没有定义 c 和 d。是什么原因？

回复讨论(解决方案)

程序正常啊没有你说的错误

没有发现有什么错误。请完整贴出代码和出错信息。

程序是正常的。

我也没找到错误。建议你从新运行下，清除下浏览器缓存。

请问你上面的代码在一个文件里面吗？应该是HTML 文件在一个文件 PHP 代码在index.php 这样才对，

<?php    function jisuan(&$a,&$b){        $c=$a+$b;        echo 'a+b='.$c."<br/>";    }    if(isset($_POST['c']) && isset($_POST['d']))        {            $x=$_POST['c'];            $y=$_POST['d'];            jisuan($x,$y);        }    else         echo "结果为0！";?>

新建一个index.php 文件把上面的文件剪切里面，运行 HTML 页面

<?php    function jisuan(&$a,&$b){        $c=$a+$b;        echo 'a+b='.$c."<br/>";    }    if(isset($_POST['c']) && isset($_POST['d']))        {            $x=$_POST['c'];            $y=$_POST['d'];            jisuan($x,$y);        }    else         echo "结果为0！";?>

新建一个index.php 文件把上面的文件剪切里面，运行 HTML 页面

那结果能显示在HTML页面里面吗？

问题解决了，做一个HTML 页面，然后在PHP文件里面引用这个HTML文件，同页面数据显示的问题，非常感谢

notice可以设置忽略的，不影响运行

notice可以设置忽略的，不影响运行
如何设置？

notice可以设置忽略的，不影响运行
如何设置？
error_reporting(0);

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