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  1. <?php
  2.  
  3. function myFilter($var){
  4.     return ($var !== NULL && $var !== FALSE && $var !== "");
  5. }
  6.  
  7. function calculate($exp) {
  8. 	$numbers = array_filter(preg_split('#[+-]|[*/=]#', $exp), "myFilter");
  9. 	$operations = array_filter(preg_split('#\\d#', $exp), "myFilter");
  10.  
  11. 	$result = $numbers[0];
  12. 	$counter = 1;
  13.  
  14. 	foreach ($operations as $operation) {
  15.     	if ($operation == "+") $result += $numbers[$counter];
  16. 		if ($operation == "-") $result -= $numbers[$counter];
  17. 		if ($operation == "*") $result *= $numbers[$counter];
  18. 		if ($operation == "/") $result /= $numbers[$counter];
  19. 		if ($operation == "=") return $result;
  20.  
  21.     	$counter++;
  22.   }
  23.  
  24. }
  25.  
  26. $res = floor(calculate("95+89+11+2-48/9*73-700/2="));
  27.  
  28. echo $res;
Success #stdin #stdout 0.02s 26176KB
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https://ideone.com/AAXKvs
language:
PHP (php 7.3.5)
created:
2 years ago
visibility:
public

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