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  1. <?php
  2.  
  3. $input = "22+2=";
  4. $inputLength = strlen($input);
  5.  
  6. $number = 0;
  7. $result = 0;
  8. $op = '';
  9.  
  10. for($i=0; $i<$inputLength; $i++)
  11. {
  12.     $char = substr($input, $i, 1);
  13.     if ($char == '*' || $char == '+' || $char == '-' || $char == '=' )
  14.     {
  15. 		//Что тут писать? 
  16.  
  17.     }
  18.     elseif (is_numeric($char))
  19.     {
  20.         $number = $number*10+$char;
  21.         echo $number;
  22.     }
  23.  
  24. }
  25.  
  26.  
Success #stdin #stdout 0.02s 52432KB
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stdin
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Standard input is empty
stdout
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222222
https://ideone.com/iFhFA2
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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