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  1. <?php
  2. $arr = array ( 'last_modified' => 'input', 'published' => 'input', 'project_content' => 'textarea' );
  3. $result = array();
  4. foreach($arr as $k => $v) {
  5.     if (array_key_exists($v, $result)) {
  6.         $result[$v][] = $k;
  7.     } else {
  8.         $result[$v] = array($k);        
  9.     }
  10. }
  11. print_r($result);
  12. ?>
Success #stdin #stdout 0.01s 20568KB
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stdin
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Standard input is empty
stdout
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Array
(
    [input] => Array
        (
            [0] => last_modified
            [1] => published
        )

    [textarea] => Array
        (
            [0] => project_content
        )

)
https://ideone.com/7n52s2
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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