Question

尽管尝试将其付诸实践的尝试很多，但我很难过。我在许多其他帖子中已经解释过，我对PHP非常陌生并且不熟悉这些巨大的功能，并且知道我几乎已经开始工作，但似乎无法实现。我已经有一个非常有帮助的人尝试为我愚蠢[链接] https://stackoverflow.com/a/13872071/1880796但现在我只需要有人纠正我的代码中的错误，让它工作。我认为在网址的末尾有一些错误，因为当我试图查看图像并查看网址时，所有这些都搞砸了，所以我不知道我做错了什么。我已经对所有数学进行了双重和三重检查，因为它太混乱但是这里是result.php：

<?php
    $filename = "Results.txt";
    $lines = file($filename);

    $q1 = $_POST['q1']; // stores checked button value
    $q2 = $_POST['q2'];
    $q3 = $_POST['q3'];
    $q4 = $_POST['q4'];
    $q5 = $_POST['q5'];
    $q6 = $_POST['q6'];
    $q7 = $_POST['q7'];
    $q8 = $_POST['q8'];

    $qN = 1;  //question number

    $newLines = '';

    $total = array();

        foreach($lines as $line) {

            $line = trim($line);  //remove excess newlines etc.
            $lineArr = explode(',',$line);  //split line into array by commas
            $index = ${'q'.$qN}-1; //zero based
        if (isset($lineArr[$index])){
            $lineArr[$index]++;  //add to position by one vote.
            $total = array_sum($lineArr); //number of clicks 

            $newLines .= implode(',',$lineArr) . "\r\n"; //newLines contains numbers then also
        $qN++;
        }
    }
//write contents back to file.
file_put_contents($filename, $newLines);

//frequencies for each line without strings
$l[1] = explode(',',$lines[0]);
$l[2] = explode(',',$lines[1]);
$l[3] = explode(',',$lines[2]);
$l[4] = explode(',',$lines[3]);
$l[5] = explode(',',$lines[4]);
$l[6] = explode(',',$lines[5]);
$l[7] = explode(',',$lines[6]);
$l[8] = explode(',',$lines[7]);

//multiply each 
$result = array();
$values = array(1,2,3,4,5);
for($i=0;$i<count($l);$i++){
    for($j=0;$j<count($values);$j++){
    $result[$i+1][$j] = $l[$i+1][$j] * $values[$j];
    }
}
//calculate percentages

$p1 = (explode(',',$lines[0]));
$p2 = (explode(',',$lines[1]));
$p3 = (explode(',',$lines[2]));
$p4 = (explode(',',$lines[3]));
$p5 = (explode(',',$lines[4]));
$p6 = (explode(',',$lines[5]));
$p7 = (explode(',',$lines[6]));
$p8 = (explode(',',$lines[7]));

// calculate averages *****For some reason most recent frequency item updated is off by one, possibly bc not up to date yet???? figure out later!!!
$f1avg = round((array_sum($result[1])/($total-1)),2);
$f2avg = round((array_sum($result[2])/($total-1)),2);
$f3avg = round((array_sum($result[3])/($total-1)),2);
$f4avg = round((array_sum($result[4])/($total-1)),2);
$f5avg = round((array_sum($result[5])/($total-1)),2);
$f6avg = round((array_sum($result[6])/($total-1)),2);
$f7avg = round((array_sum($result[7])/($total-1)),2);
$f8avg = round((array_sum($result[8])/($total-1)),2);
//pie chart question 1 information
$p1f0 = round((($p1[0]/($total-1))*360),0);
$p1f1 = round((($p1[1]/($total-1))*360),0);
$p1f2 = round((($p1[2]/($total-1))*360),0);
$p1f3 = round((($p1[3]/($total-1))*360),0);
$p1f4 = round((($p1[4]/($total-1))*360),0);
//_____________$a0________$a1______________$a2___________________$a3__________________________$a4_______________
$pC1 = array(($p1f0),($p1f0+$p1f1),($p1f0+$p1f1+$p1f2),($p1f0+$p1f1+$p1f2+$p1f3),($p1f0+$p1f1+$p1f2+$p1f3+$p1f4));
print_r ($pC1);

这是饼图脚本：

header("Content-type: image/png");

//create pie charts
$image=imagecreatetruecolor(51,51);
//_____________________colors____________________________
$my_colorA=imagecolorallocate($image,51,51,255);
$my_colorB=imagecolorallocate($image,100,150,215);
$my_colorC=imagecolorallocate($image,20,20,151);
$my_colorX=imagecolorallocate($image,216,216,255);


$red = imagecolorallocate($image, 255, 0, 0);
$orange = imagecolorallocate($image, 191, 64, 0);
$dark_yellow = imagecolorallocate($image, 128, 128, 0);
$dark_green = imagecolorallocate($image, 64, 191, 0);
$green = imagecolorallocate($image, 0, 255, 0);
//_______________________________________________________
imagefill($image,0,0,$my_colorX);

//__________________ , center,  w , h , st, end, clr  ,    type______
imagefilledarc($image,25,25, 50, 50,  0,  $a0, $red, IMG_ARC_PIE);
imagefilledarc($image,25,25, 50, 50, $a0,  $a1, $orange, IMG_ARC_PIE);
imagefilledarc($image,25,25, 50, 50, $a1, $a2, $dark_yellow , IMG_ARC_PIE);
imagefilledarc($image,25,25, 50, 50, $a2,  $a3, $dark_green, IMG_ARC_PIE);
imagefilledarc($image,25,25, 50, 50, $a3,  $a4, $green, IMG_ARC_PIE);
//___________________________________________________________________

imagepng($image);
imagedestroy($image);

我不知道它为什么不起作用但是当我点击查看图片时我得到了这个： PieChart.php A0 = 33＆安培; A1 = 66＆安培; A2 = 230安培; A3 = 263＆安培; A4 = 361 /％3E％3C / TD％3E％3Ctd％20style =

所以是的，我不知道我做错了什么！请帮忙！

哦，最后这就是我在我的HTML中添加的内容。

img src = \“PieChart.php？a0 =”。$ pC1 [0]。“＆amp; a1 =”。$ pC1 [1]。 “＆安培; A2 =”。$ PC1 [2]。 “＆安培; A3 =” $ PC1 [3]。。。 “＆安培; A4 =” $ PC1 [4] “/”

是的我知道它需要img标签和php和echo我只是无法在表单中发布。

Answer 1

所以解决方案恰好是某种形式的语法错误，但对于那些想要了解上述代码的人来说......

1）通过硬编码输入值并查看结果来检查脚本 2）检查从调用函数传递的参数。

之后，上面的代码示例与您在php手册中找到的代码示例非常相似。

用PHP在html中无法显示png图像

1 个答案: