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  1. <?php
  2. $arr = ['A', 'B', 'C', 'D'];
  3.  
  4. $newArr = array_filter($arr, function($val) {
  5.     return $val < 3;
  6. }, ARRAY_FILTER_USE_KEY);
  7.  
  8. var_dump(implode('/', $newArr));
Success #stdin #stdout 0.01s 82880KB
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stdin
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Standard input is empty
stdout
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string(5) "A/B/C"
https://ideone.com/B1rn6I
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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