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PHP implements decimal to binary conversion

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Release: 2016-07-25 09:12:20
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Example, convert decimal to binary.

  1. //php implements base conversion
  2. function dec2bin ($dec) {
  3. $flag = array();
  4. while ($dec != 0) {
  5. array_push($flag, $dec%2);
  6. $dec = (int)($dec/2);
  7. }
  8. $binstr = '';
  9. while (!emptyempty($flag)) {
  10. $binstr .= array_pop($flag) ;
  11. }
  12. return $binstr;
  13. }
  14. echo dec2bin(7);
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Note: The above code is used to practice base conversion. PHP has provided built-in functions decbin() and base_convert();

Example:

  1. echo '
    ';

  2. echo base_convert(7,10,2);
  3. echo '
    ';
  4. echo base_convert(1111,2,8);
  5. echo '
    ';

  6. echo decbin(6);

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