如何清除PHP中未定义的row（）错误

Question

i get the code of knn algorithim from http://jameshamilton.eu/old/datamining/k-nearest_neighbour.php?source . 我从http://jameshamilton.eu/old/datamining/k-nearest_neighbour.php?source获得了knn algorithim的代码。 i got error in undefined function row .kindly help me in removing this error.this the akgo of k -nearest algorithim 我在未定义的函数行中遇到错误。请帮助我删除此error.this k -nearest algorithim的akgo

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="description" content="K Nearest Neighbour Algorithm - Data Mining" />
<meta name="keywords" content="k nearest neighbour, data mining, php, computer science, james hamilton" />
<meta http-equiv="Content-Language" content="en-gb" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<meta name="robots" content="all" />
<meta name="revisit-after" content="1 days" />

<title>K Nearest Neighbour Algorithm - Data Mining</title>
<?php
include('admin_nb.php');
 // $date=$_GET['id'];echo"</br>";
  //$d=$_GET['id1'];

$con = mysql_connect("localhost","root","");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
$db=mysql_select_db("vas1",$con);


?>

</head>

<body>

<?php
if(isset($_GET['source'])) {
    highlight_file(__FILE__);
}else{
if(!isset($_POST['k'])) $_POST['k'] = 3;
?>


    <form method="post" action="<?=$_SERVER['PHP_SELF']?>">
    K:&nbsp;
    <select name="k">
        <?php foreach(range(1, 10) as $k) { ?>
            <option value="<?=$k?>" <?php if($k == $_POST['k']) { ?> selected="selected"<?php } ?>><?=$k?></option>
        <?php } ?>
    </select>


    <table id="patients" cellpadding="3" cellspacing="0">
        <tr>

  <th>highest_dialled_call_type</th>
   <th>Age_less_than_30</th>
   <th>Age_greater_than_30</th>
   <th>Payment_on_time</th>
   <th>Pkg_activation</th>
   <th>Customer_profile</th>
   <th>Churn</th>
   <th>Proposed_pkg</th>
   <th>Distance</th>


        </tr>

    <?php

        /*
            --
            -- Table structure for table `datamining_diagnoses`
            --

            CREATE TABLE IF NOT EXISTS `datamining_diagnoses` (
              `id` int(11) NOT NULL auto_increment,
              `sorethroat` tinyint(4) NOT NULL default '0',
              `fever` tinyint(4) NOT NULL default '0',
              `swollenglands` tinyint(4) NOT NULL default '0',
              `congestion` tinyint(4) NOT NULL default '0',
              `headache` tinyint(4) NOT NULL default '0',
              `diagnosis` varchar(50) NOT NULL default '',
              PRIMARY KEY  (`id`)
            ) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=11 ;

            --
            -- Dumping data for table `datamining_diagnoses`
            --

            INSERT INTO `datamining_diagnoses` (`id`, `sorethroat`, `fever`, `swollenglands`, `congestion`, `headache`, `diagnosis`) VALUES
            (1, 1, 1, 1, 1, 1, 'Strepthroat'),
            (2, 0, 0, 0, 1, 1, 'Allergy'),
            (3, 1, 1, 0, 1, 0, 'Cold'),
            (4, 1, 0, 1, 0, 0, 'Strepthroat'),
            (5, 0, 1, 0, 1, 0, 'Cold'),
            (6, 0, 0, 0, 1, 0, 'Allergy'),
            (7, 0, 0, 1, 0, 0, 'Strepthroat'),
            (8, 1, 0, 0, 1, 1, 'Allergy'),
            (9, 0, 1, 0, 1, 1, 'Cold'),
            (10, 1, 1, 0, 1, 1, 'Cold');
        */

        /*
            function getRows takes an SQL query string (and a optional array key type - NUM or ASSOC)
            and returns and array containing all the rows of the query.

                define(ASSOC, 1);
                define(NUM, 2);

                function getRows($sql, $type=ASSOC) {
                    $result = mysql_query($sql);
                    if($type == ASSOC) {
                        while($row = mysql_fetch_array($result))
                            $ret[] = $row;
                    }else if($type == NUM) {
                        while($row = mysql_fetch_row($result))
                            $ret[] = $row;
                    }else{
                        die("type should be NUM or ASSOC");
                    }
                    return $ret;
                }
        */


        $rows =getRows("SELECT * FROM knowledge_base;", NUM);


        $closest = -1;

        if(isset($_POST['diagnose'])) {
            $distance = array_fill(0, count($rows), 0);

            $instance = $_POST['instance'];

            for($i = 0; $i < count($rows); $i++) {

                for($j = 1; $j < 8; $j++) {
                    if($rows[$i][$j] != $instance[$j])
                        $distance[$i]++;
                }

            }


            asort($distance);

            $kclosest = array();

            foreach($distance as $key => $d)
                if(++$x <= $_POST[k]) {
                     $kclosest[$rows[$key][8]]++;
                     $newdistance[$key] = $d;
                }

            arsort($kclosest);
            $diagnosis = key($kclosest);

       }

        $a = 0;
        foreach($rows as $row) {

        ?>
            <tr <?php if(isset($newdistance[$a])) { ?> class="selected"<?php } ?>>
                 <td><?=$row[0] == international ? "international" : "onnet" : "offnet"; ?></td>
                <td><?=$row[1] == no ? "no" : "yes"; ?></td>
                <td><?=$row[2] == no ? "no" : "yes"; ?></td>
                <td><?=$row[3] == no ? "no" : "yes"; ?></td>
                <td><?=$row[4] == no ? "no" : "yes"; ?></td>
      <td><?=$row[5] == no ? "new" : "loyal"; ?></td>
                <td><?=$row[6] == no ? "no" : "yes"; ?></td>
                <td><?=$row[7]?></td>
                <td><?=$distance[$a++]?></td>
            </tr>

        <?php

        }
        ?>
        <tr>

                <td><input type="hidden" name="instance[]" value="11" />11</td>
                <td><select name="instance[]">
                        <option value="0"<?php if($_POST['instance'][0] == "international") echo "selected=\"selected\"";?>>international</option>
                        <option value="1"<?php if($_POST['instance'][0] == "onnet") echo "selected=\"selected\"";?>>onnet</option>
      <option value="2"<?php if($_POST['instance'][0] == "offnet") echo "selected=\"selected\"";?>>offnet</option>
                    </select>
                </td>
                <td><select name="instance[]">
                        <option value="0"<?php if($_POST['instance'][1] == "0") echo "selected=\"selected\"";?>>no</option>
                        <option value="1"<?php if($_POST['instance'][1] == "1") echo "selected=\"selected\"";?>>yes</option>
                    </select>
                </td>
                <td><select name="instance[]"&gt.

error come at line : $rows =getRows("SELECT * FROM knowledge_base;", NUM); 错误出现在行： $rows =getRows("SELECT * FROM knowledge_base;", NUM); error is : Fatal error: Call to undefined function getRows() in C:\\wamp\\www\\vas1\\knn1.php on line 122 kindly help in removing this error 错误是： Fatal error: Call to undefined function getRows() in C:\\wamp\\www\\vas1\\knn1.php on line 122有助于消除此错误

Answer 1

您已经注释掉了getRows（）函数的定义。

Answer 2

Uncomment your getRows() function so it looks like: 取消注释getRows（）函数，使其看起来像：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta name="description" content="K Nearest Neighbour Algorithm - Data Mining" />
<meta name="keywords" content="k nearest neighbour, data mining, php, computer science, james hamilton" />
<meta http-equiv="Content-Language" content="en-gb" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<meta name="robots" content="all" />
<meta name="revisit-after" content="1 days" />

<title>K Nearest Neighbour Algorithm - Data Mining</title>
<?php
include('admin_nb.php');
 // $date=$_GET['id'];echo"</br>";
  //$d=$_GET['id1'];

$con = mysql_connect("localhost","root","");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
$db=mysql_select_db("vas1",$con);


?>

</head>

<body>

<?php
if(isset($_GET['source'])) {
    highlight_file(__FILE__);
}else{
if(!isset($_POST['k'])) $_POST['k'] = 3;
?>


    <form method="post" action="<?=$_SERVER['PHP_SELF']?>">
    K:&nbsp;
    <select name="k">
        <?php foreach(range(1, 10) as $k) { ?>
            <option value="<?=$k?>" <?php if($k == $_POST['k']) { ?> selected="selected"<?php } ?>><?=$k?></option>
        <?php } ?>
    </select>


    <table id="patients" cellpadding="3" cellspacing="0">
        <tr>

  <th>highest_dialled_call_type</th>
   <th>Age_less_than_30</th>
   <th>Age_greater_than_30</th>
   <th>Payment_on_time</th>
   <th>Pkg_activation</th>
   <th>Customer_profile</th>
   <th>Churn</th>
   <th>Proposed_pkg</th>
   <th>Distance</th>


        </tr>

    <?php
                define(ASSOC, 1);
                define(NUM, 2);

                function getRows($sql, $type=ASSOC) {
                    $result = mysql_query($sql);
                    if($type == ASSOC) {
                        while($row = mysql_fetch_array($result))
                            $ret[] = $row;
                    }else if($type == NUM) {
                        while($row = mysql_fetch_row($result))
                            $ret[] = $row;
                    }else{
                        die("type should be NUM or ASSOC");
                    }
                    return $ret;
                }



        $rows =getRows("SELECT * FROM knowledge_base;", NUM);


        $closest = -1;

        if(isset($_POST['diagnose'])) {
            $distance = array_fill(0, count($rows), 0);

            $instance = $_POST['instance'];

            for($i = 0; $i < count($rows); $i++) {

                for($j = 1; $j < 8; $j++) {
                    if($rows[$i][$j] != $instance[$j])
                        $distance[$i]++;
                }

            }


            asort($distance);

            $kclosest = array();

            foreach($distance as $key => $d)
                if(++$x <= $_POST[k]) {
                     $kclosest[$rows[$key][8]]++;
                     $newdistance[$key] = $d;
                }

            arsort($kclosest);
            $diagnosis = key($kclosest);

       }

        $a = 0;
        foreach($rows as $row) {

        ?>
            <tr <?php if(isset($newdistance[$a])) { ?> class="selected"<?php } ?>>
                 <td><?=$row[0] == international ? "international" : "onnet" : "offnet"; ?></td>
                <td><?=$row[1] == no ? "no" : "yes"; ?></td>
                <td><?=$row[2] == no ? "no" : "yes"; ?></td>
                <td><?=$row[3] == no ? "no" : "yes"; ?></td>
                <td><?=$row[4] == no ? "no" : "yes"; ?></td>
      <td><?=$row[5] == no ? "new" : "loyal"; ?></td>
                <td><?=$row[6] == no ? "no" : "yes"; ?></td>
                <td><?=$row[7]?></td>
                <td><?=$distance[$a++]?></td>
            </tr>

        <?php

        }
        ?>
        <tr>

                <td><input type="hidden" name="instance[]" value="11" />11</td>
                <td><select name="instance[]">
                        <option value="0"<?php if($_POST['instance'][0] == "international") echo "selected=\"selected\"";?>>international</option>
                        <option value="1"<?php if($_POST['instance'][0] == "onnet") echo "selected=\"selected\"";?>>onnet</option>
      <option value="2"<?php if($_POST['instance'][0] == "offnet") echo "selected=\"selected\"";?>>offnet</option>
                    </select>
                </td>
                <td><select name="instance[]">
                        <option value="0"<?php if($_POST['instance'][1] == "0") echo "selected=\"selected\"";?>>no</option>
                        <option value="1"<?php if($_POST['instance'][1] == "1") echo "selected=\"selected\"";?>>yes</option>
                    </select>
                </td>
                <td><select name="instance[]"&gt.

如何清除PHP中未定义的row（）错误

问题描述

2 个解决方案

解决方案1
1 2013-06-26 16:37:03

解决方案2
0

如何清除PHP中未定义的row（）错误

问题描述

2 个解决方案

解决方案1 1 2013-06-26 16:37:03

解决方案2 0

解决方案1
1 2013-06-26 16:37:03

解决方案2
0