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  1.  <?php
  2.  $array = array('foo' => 'bar', 'baz', 'bat' => 2);
  3.     $arry = implode(',', array_keys($array));
  4.     echo $arry;
Success #stdin #stdout 0.01s 20568KB
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Standard input is empty
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 foo,0,bat
https://ideone.com/NuEXEW
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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