PHP开关的情况下使用HTML

Question

混合的更清洁的方式，我有这个PHP块

<?php switch ($_GET['class_id']) { ?> 
<?php case 1: ?> 
<img src="<?php print $result['standard_image'] == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['standard_image']}" ?>" alt="" /> 
<?php break; ?> 
<?php case 2: ?> 
<img src="<?php print $result['business_image'] == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['business_image']}" ?>" alt="" /> 
<?php break; ?> 
<?php case 3: ?> 
<img src="<?php print $result['premium_image'] == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['premium_image']}" ?>" alt="" /> 
<?php break; ?> 
<?php default: ?> 
<img src="<?php print $result['standard_image'] == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['standard_image']}" ?>" alt="" /> 
<?php break; ?> 
<?php } ?> 

但这似乎有点messy..any建议

Answer 1

为什么所有的情况下，摆在首位？你只是选择要使用的图像。

​​

额外的好处：逻辑的目的是更清晰。

Answer 2

您可以在case语句中的回声的img标签

Answer 3

我同意，该代码是疯狂的。

将所有PHP代码写入一个<?php ?>块。当您必须打印某些内容时，请使用打印功能或回显结构。

声明变量，可以帮助你阅读和理解的代码。

例如：

<?php 

switch ($_GET['class_id']) { 
    case 1: 
     $imgpath = ($result['standard_image'] == "") ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['standard_image']}"; 
     echo '<img src="'.$imgpath.'" alt="" />'; 
     break; 
    case 2: 
     // and so on for the other cases... 
} 

?> 

是不是有点不太凌乱？

Answer 4

switch($_GET['class_id']) 
{ 
    case 1: 
     $source = '/images/src1.png'; 
     $class = 'yourClass'; 
     $alt = 'yourAlt'; 
    break; 

    case 2: 
     $source = '/images/src2.png'; 
     $class = 'yourClass2'; 
     $alt = 'yourAlt2'; 
    break; 

    case 3: 
     $source = '/images/src3.png'; 
     $class = 'yourClass3'; 
     $alt = 'yourAlt3'; 
    break; 

    default: 
     $source = '/images/src4.png'; 
     $class = 'yourClass4'; 
     $alt = 'yourAlt4'; 
    break; 
} 

$image = <<<EOF 
<img src="$source" class="$class" alt="$alt" /> 
EOF; 

echo $image; 

Answer 5

<?php 
$image = $result['standard_image']; 
switch ($_GET['class_id']) { 
    case 2: $image = $result['business_image']; break; 
    case 3: $image = $result['premium_image']; break; 
} 
?> 
<img src="<?php print $image == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$image}"; ?>" alt="" /> 

你并不需要打开和关闭PHP标记每一行。

Answer 6

<?php 
$img = ''; 
switch ($_GET['class_id']) { 
    case 1 : 
    $img = $result['standard_image']; 
    break; 
    case 2 : 
    $img = $result['business_image']; 
    break; 
    case 3 : 
    $img = $result['premium_image']; 
    break; 
    default : 
    $img = $result['standard_image']; 
    break; 
} 
if (!$img) { 
    $img = 'blue-png2.png'; 
} 
?> 
<img src="<?php print $img; ?>" alt="" /> 

您可以删除换行符，你认为合适......我始终格式化的东西作为一个原则，你也应该这么做！ :)

Answer 7

如果您想使用的开关，我建议像下面这样。

<?php 
    $img_type = ''; 
    switch ($_GET['class_id']) { 
    case 1: 
     $img_type = 'standard_image'; 
     break; 
    case 2: 
     $img_type = 'business_image'; 
     break; 
    case 3: 
     $img_type = 'premium_image'; 
     break; 
    default: 
     $img_type = 'standard_image'; 
     break; 
    } 
    $src = $result[$img_type] == "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result[$img_type]}"; 
?> 
<img src="<?php print $src ?>" alt="" /> 

Answer 8

$array = array(
    array('/images/src1.png', 'yourClass', 'yourAlt'), 
    array('/images/src2.png', 'yourClass2', 'yourAlt2'), 
    array('/images/src3.png', 'yourClass3', 'yourAlt3')); 


echo '<img src="'.$array[$_GET['class_id']][0].'" class="'.$array[$_GET['class_id']][1].'" alt="'.$array[$_GET['class_id']][2].'" />'; 

Answer 9

我会去的实际上是把这个块中，并使用一些预定义变量。一点点清洁，至少对我来说...

<?php 
$p = "/pre_config/css/images/blue-png2.png"; 
$s = "/shop_possystems/image/"; 
switch ($_GET['class_id']) { 
    case 1: 
     $x = (empty($result['standard_image']) ? $p : "{$s}/{$result['standard_image']}"; 
     break; 
    case 2: 
     $x = (empty($result['business_image']) ? $p : "{$s}/{$result['business_image']}"; 
     break; 
    case 3: 
     $x = (empty($result['premium_image']) ? $p : "{$s}/{$result['standard_image']}"; 
     break; 
    default: 
     $x = (empty($result['standard_image']) ? $p : "{$s}/{$result['standard_image']}"; 
     break; 
} 

echo "<img src=\"{$x}\" alt=\"\" />"; 

？>

Answer 10

是...

<?php 
$a = array(0, 0, 'business_image', 'premium_image'); 
$t = $a[(int)$_GET['class_id']] || "standard_image"; 
echo "<img src=\""; 
echo $result[$t] === "" ? "/pre_config/css/images/blue-png2.png" : "/shop_possystems/image/{$result['standard_image']}"; 
echo "\" />"; 
?>