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  1. <?php
  2.  
  3. $word = "it's not big deal";
  4. $input      = strtolower($word);
  5. $split      = preg_split('/\s+/', $input);
  6. $length     = count($split);
  7.  
  8. $neg = "NOT_";
  9. for ($x=0; $x<$length; $x++){
  10.     if (preg_match("/\bNOT\b/i",$split[$x])){
  11.         $y=$x+1;
  12.         $split[$x]      = "{$neg}{$split[$y]}";
  13.         unset($split[$y]);
  14.     }
  15. }
  16. $word = implode(" ",$split);
  17. echo $word;
  18.  
  19. ?>
Success #stdin #stdout #stderr 0.03s 52480KB
comments (?)
stdin 
Standard input is empty
stdout 
it's NOT_big deal
stderr 
PHP Notice:  Undefined offset: 2 in /home/7lgjsb/prog.php on line 10
https://ideone.com/MKMn0e
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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