一个元素上的回显类会影响循环回显的所有元素 - PHP: Echoing class on one element effects all elements echoed by loop

PHP: Echoing class on one element effects all elements echoed by loop

本文关键字：元素影响循环一个 | 更新日期: 2023-09-27

我有一个回显一些元素的循环。我也有一个if语句，应用复选框'checked'属性到一个复选框元素，如果它包含一个特定的字符串从数据库，例如:

if ($team ==  $row['team1']) {
  $checked1 = "checked='checked'";
}
else {
  $checked1 = "";
}
if ($team ==  $row['team2']) {
  $checked2 = "checked='checked'";
}
else {
  $checked2 = "";
}
echo "<div><input type='radio' name='games" . $i . "' value='" . $row['team1'] . "' " . $checked1 . "></div>";
echo "<div><input type='radio' name='games" . $i . "' value='" . $row['team2'] . "' " . $checked2 . "></div>";

这似乎工作良好。但是我还想在复选框周围的div中添加一个类，例如:

if ($team ==  $row['team1']) {
  $checked1 = "checked='checked'";
  $div1 = "class='green'";
}
else {
  $checked1 = "";
  $div1 = "";
}
if ($team ==  $row['team2']) {
  $checked2 = "checked='checked'";
  $div2 = "class='green'";
}
else {
  $checked2 = "";
  $div2 = "";
}
echo "<div " . $div1 . "><input type='radio' name='games" . $i . "' value='" . $row['team1'] . "' " . $checked1 . "></div>";
echo "<div " . $div2 . "><input type='radio' name='games" . $i . "' value='" . $row['team2'] . "' " . $checked2 . "></div>";

问题是类似乎不加区分地将自己应用于循环产生的所有div。这是循环输出元素的副产品吗?有没有更好的方法来实现这个(也许是JQuery)。

编辑:添加HTML结果

<div class='green'><input  type='radio' name='games1' value='myteam' checked='checked'></div>"
<div><input type='radio' name='games1' value='yourteam' ></div>
<div class='green'><input  type='radio' name='games1' value='myteam' ></div>"
<div><input type='radio' name='games1' value='yourteam' checked='checked'></div>
<div class='green'><input  type='radio' name='games1' value='myteam' ></div>"
<div><input type='radio' name='games1' value='yourteam' checked='checked'></div>
<div class='green'><input  type='radio' name='games1' value='myteam' checked='checked'></div>"
<div><input type='radio' name='games1' value='yourteam' ></div>"

我怀疑问题是你的循环，但我会尝试在你的逻辑之前声明变量。

这将确保它们每次都被清除:

$checked1 = "";
$div1 = "";
$checked2 = "";
$div2 = "";
if ($team ==  $row['team1']) {
  $checked1 = ' checked="checked"';
  $div1 = ' class="green"';
}
if ($team ==  $row['team2']) {
  $checked2 = ' checked="checked"';
  $div2 = ' class="green"';
}
echo '<div' . $div1 . '><input type="radio" name="games' . $i . '" value="' . $row['team1'] . '"' . $checked1 . '></div>';
echo '<div' . $div2 . '><input type="radio" name="games' . $i . '" value="' . $row['team2'] . '"' . $checked2 . '></div>';

同样，如果$team为空，$row[team1]为空，则求值为真

(我想留下评论，但我还没有足够的声誉)

不管怎样，你有这样的理由吗?

$div1 ="class='green'";
$div2 ="class='green'";

?当两个变量具有相同的值时，所有的类看起来都是一样的。