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  1. <?php
  2. $valid = array(1,2,3);
  3. $post = array('1','f','3', '3');
  4. if(is_array($post)){
  5.     $post = array_unique($post);
  6.     foreach($post as $key => $value){
  7.         if(in_array($value, $valid)){
  8.             $class = true;
  9.         }else{
  10.             unset($post[$key]);
  11.         }
  12.     }
  13. }
  14. if(isset($class)){
  15.     echo 'class="class' . implode(' class', $post) . '"';
  16. }
Success #stdin #stdout 0.01s 20520KB
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Standard input is empty
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class="class1 class3"
https://ideone.com/TXn7gM
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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