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  1. <?php
  2.  
  3. function bin2si($bin,$bits=32) 
  4. { 
  5.     if (strlen($bin)==$bits) 
  6.     { 
  7.         if (substr($bin,0,1) == 0) // positive or zero 
  8.         { 
  9.             $si = base_convert($bin,2,10); 
  10.         } 
  11.         else // negative 
  12.         { 
  13.             $si = base_convert($bin,2,10); 
  14.             $si = -(pow(2,$bits)-$si); 
  15.         } 
  16.         return $si; 
  17.     } 
  18. } 
  19.  
  20. echo bin2si('11111101', 8);
Success #stdin #stdout 0.02s 52472KB
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https://ideone.com/h4y0Fh
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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