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  1. <?php
  2.     $a = array();
  3.     $b = implode(',',$a); // ""
  4.     var_dump($b);
  5.  
  6.     $a = array('foo');
  7.     $b = implode(',',$a); // "foo";
  8.     var_dump($b);
  9.  
  10.     $a = array('foo','bar');
  11.     $b = implode(',',$a); // "foo,bar";
  12.     var_dump($b);
Success #stdin #stdout 0.02s 13112KB
comments (?)
stdin 
Standard input is empty
stdout 
string(0) ""
string(3) "foo"
string(7) "foo,bar"
https://ideone.com/wfimf
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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