如何在PHP的每一个foreach语句的每一个结果输出一个值？ [英] How to output a value on every third result of a foreach statement in php?

问题描述

在我的应用程序中有一个 foreach 语句，它回显了我的数据库结果列表：

 <？php 
 
 foreach（$ featured_projects as $ fp）{
 echo'< div class =result>'; 
 echo $ fp ['project_name']; 
 echo'< / div>'; 
} 
 
？> 
  

我想：

每第三个结果，给这个div一个不同的类。我可以使用一个计数器和 /manual/en/language.operators.arithmetic.php> modulo / modulus 运算符：

  <？php 
 
 //控制变量
 $ counter = 0; 
 
 foreach（$ featured_projects as $ fp）{
 
 //重置变量
 $ class =''; 
 
 //对于每个第三个结果，设置变量值
 if（++ $ counter％3 === 0）{
 $ class ='third'; 
} 
 
 //你的代码和保存所需CSS类名的变量
 echo'< div class =result'。$ class。'>' ; 
 echo $ fp ['project_name']; 
 echo'< / div>'; 
} 
 
？> 
  

I have a foreach statement in my app that echos a list of my database results:

<?php

foreach($featured_projects as $fp) {
  echo '<div class="result">';
  echo $fp['project_name'];
  echo '</div>';
}

?>

I would like to:

On every third result, give the div a different class. How can I achieve this?

解决方案

You can use a counter and the modulo/modulus operator as per below:

<?php

// control variable
$counter = 0;

foreach($featured_projects as $fp) {

    // reset the variable
    $class = '';

    // on every third result, set the variable value
    if(++$counter % 3 === 0) {
        $class = ' third';
    }

    // your code with the variable that holds the desirable CSS class name
    echo '<div class="result' . $class . '">';
    echo $fp['project_name'];
    echo '</div>';
}

?>

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