PHP使用for循环和回显元素[重复]答案

【问题标题】：PHP using for loop and echo elements [duplicate]PHP使用for循环和回显元素[重复]
【发布时间】：2016-07-02 18:13:22
【问题描述】：

我有以下 PHP 代码：

<?php
 $states = array("Alabama","Alaska","Arizona","Arkansas",
 "California","Colorado","Connecticut","Delaware",
"Florida","Georgia","Hawaii","Idaho",
"Illinois","Indiana","Iowa","Kansas","Kentucky");
 $stateAbbr = array("AL","AK","AZ","AR","CA","CO","CT","DE",
 "FL","GA","HI","ID","IL","IN","IA","KS","KY");
?>
<!DOCTYPE html>
<html>
<body>
 <h1>List of States</h1>
</body>
</html>

现在我需要添加一个 PHP 代码，通过循环遍历所有元素，使用 for 循环，并在每个索引处回显两个数组中的元素，将状态和状态缩写打印为表格

【问题讨论】：

您正在寻找的是foreach 循环：php.net/manual/en/control-structures.foreach.php
你可以试试这个代码为你的解决方案<?php $states = array("Alabama","Alaska","Arizona","Arkansas", "California","Colorado","Connecticut","Delaware", "Florida","Georgia","Hawaii","Idaho", "Illinois","Indiana","Iowa","Kansas","Kentucky"); $stateAbbr = array("AL","AK","AZ","AR","CA","CO","CT","DE", "FL","GA","HI","ID","IL","IN","IA","KS","KY"); ?> <!DOCTYPE html> <html> <body> <h1>List of States</h1> <?php foreach($states as $key => $value): echo $stateAbbr[$key]."=".$value."<br>"; endforeach; ?> </body> </html>

标签： php loops echo element

【解决方案1】：

你可以在 li 上使用双 foreach

<?php 

     foreach( $states as $index => $state ) {
          echo "<li>" . $state . ' - ' . $stateAbbr[$index] ."</li>
    }
    echo "</ul>"
?>

【讨论】：

foreach 循环中没有and
@Rizier123 正确...答案已通过正确的索引更新

【解决方案2】：

您也可以组合数组然后循环抛出，创建表格行。

    <table>
      <thead>
        <tr>
          <th>Code</th>
          <th>Name</th>
        </tr>
      </thead>
      <tbody>
      <?php
        foreach (array_combine($stateAbbr, $states) as $code => $name) {
            echo '<tr><td>' . $code . '</td><td>' . $name . '</td></tr>';
        }
      ?>
      </tbody>
    </table>

【讨论】：

【解决方案3】：

你可以像这样制作你的数组：

<?php
$states = array(
"Alabama" => "AL",
"Alaska" => "AK",
"Arizona" => "AZ",
"Arkansas" => "AR", 
"California" => "CA",
"Colorado" => "CO",
"Connecticut" => "CT",
"Delaware" => "DE", 
"Florida" => "FL",
"Georgia" => "GA",
"Hawaii" => "HI",
"Idaho" => "ID", 
"Illinois" => "IL",
"Indiana" => "IN",
"Iowa" => "IA",
"Kansas" => "KS",
"Kentucky" => "KY"
);

然后像这样或在任何你想要的标签中打印它：

<!DOCTYPE html>
<html>
<body>
    <h1>List of States</h1>
    <?php
        foreach($states as $state => $abbr)
        {
            echo $state.' - '.$abbr.'<br />';
        } 
    ?>
</body>
</html>

问候。

【讨论】：