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  1. <?php
  2.  
  3.  
  4.  
  5. $input = "22+2=";
  6.  
  7.  
  8.  
  9.  
  10. for($i=0; $i <= strlen($input); $i++)
  11. {
  12.     $char = substr($input, $i, 1);
  13.     if ($char == '*' || $char == '+' || $char == '-' || $char == "=" )
  14.     {
  15. 		$pieces = explode($char, $input);
  16. 		if($char == '*'){
  17. 			$result = $pieces[0] * $pieces[1];
  18. 		}
  19. 			elseif($char == '+'){
  20. 			$result = $pieces[0] + $pieces[1];
  21. 		}
  22.  		elseif($char == '-'){
  23. 			$result = $pieces[0] - $pieces[1];
  24. 		}
  25. 				elseif($char == '='){
  26.  echo $result;
  27. 		}
  28.  
  29.  
  30.     }
  31. }
  32.  
Success #stdin #stdout 0.02s 52472KB
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https://ideone.com/SZoDin
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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