Question

How to remove duplicate words from a string in PHP

Answer 1

$s = " PHP , Java , Python , PHP ";
  
$s = implode(',', array_unique(explode(',', $s)));
      
echo $s;
  
   
/*
run:
    
PHP , Java , Python
    
*/

 

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Answer 2

$s = "AAA,aaa,aAA,aaA,AAa,AAA,BBB,CCC,AAA";

$s = implode(',', array_unique(explode(',', $s)));
      
echo $s;
  
   
/*
run:
    
AAA,aaa,aAA,aaA,AAa,BBB,CCC
    
*/

 

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