Bug #50175 [Com]: gmp_init() results 0 on given base and number starting with 0x or 0b

From: Date: Tue, 29 Mar 2011 20:39:07 +0000
Subject: Bug #50175 [Com]: gmp_init() results 0 on given base and number starting with 0x or 0b
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=50175&edit=1

 ID:                 50175
 Comment by:         karl dot debisschop at pearson dot com
 Reported by:        thomas dot hebinck at digionline dot de
 Summary:            gmp_init() results 0 on given base and number
                     starting with 0x or 0b
 Status:             Open
 Type:               Bug
 Package:            GNU MP related
 Operating System:   Ubuntu
 PHP Version:        5.3.0
 Block user comment: N
 Private report:     N

 New Comment:

in php 5.3.6, the issue seems to be resolve with respect to "0x"

> php -r '$v = gmp_init("0x83", 36); print("$v\n");'
Resource id #4
> php -r '$v = gmp_init("0b83", 36); print("$v\n");'

> php -r '$v = gmp_init("0b83", 16); print("$v\n");'
Resource id #4
> php -r '$v = gmp_init("b83", 36); print("$v\n");'
Resource id #4

Also, the actual return value from gmp_init() is FALSE:

> php -r '$v = gmp_init("0b83", 36); if ($v === FALSE)
print("false\n");'
false


Previous Comments:
------------------------------------------------------------------------
[2009-11-14 13:46:52] thomas dot hebinck at digionline dot de

Description:
------------
When calling gmp_init() with a *string* starting with 0x or 0b and a
given base, 0 is returned (except if the base is 16).

Tested with PHP 5.2.3, PHP 5.3 and PHP 5.3-200911141130.


Reproduce code:
---------------
for($base=2;$base<=36;$base++) {
  echo '<br>'.$base.': ';
  for($i=1;$i<$base;$i++) {
    $c=($i<=9?$i:chr($i-10+ord('a')));
    $s='0'.$c.$c;
    echo gmp_strval(gmp_init($s,$base),$base) . ' ';
  }
}

Expected result:
----------------
2: 11 
3: 11 22 
4: 11 22 33 
5: 11 22 33 44 
6: 11 22 33 44 55 
7: 11 22 33 44 55 66 
8: 11 22 33 44 55 66 77 
9: 11 22 33 44 55 66 77 88 
10: 11 22 33 44 55 66 77 88 99 
11: 11 22 33 44 55 66 77 88 99 aa 
12: 11 22 33 44 55 66 77 88 99 aa bb 
13: 11 22 33 44 55 66 77 88 99 aa bb cc 
14: 11 22 33 44 55 66 77 88 99 aa bb cc dd 
15: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee 
16: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 
17: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg 
18: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh 
19: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii 
20: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj 
21: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk 
22: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll 
23: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm 
24: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn

25: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo 
26: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp 
27: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq 
28: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr 
29: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss 
30: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt 
31: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu 
32: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv 
33: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww 
34: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww xx 
35: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww xx yy 
36: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww xx yy zz 


Actual result:
--------------
2: 11 
3: 11 22 
4: 11 22 33 
5: 11 22 33 44 
6: 11 22 33 44 55 
7: 11 22 33 44 55 66 
8: 11 22 33 44 55 66 77 
9: 11 22 33 44 55 66 77 88 
10: 11 22 33 44 55 66 77 88 99 
11: 11 22 33 44 55 66 77 88 99 aa 
12: 11 22 33 44 55 66 77 88 99 aa 0 
13: 11 22 33 44 55 66 77 88 99 aa 0 cc 
14: 11 22 33 44 55 66 77 88 99 aa 0 cc dd 
15: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee 
16: 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 
17: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg 
18: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh 
19: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii 
20: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj 
21: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk 
22: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll 
23: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm 
24: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn

25: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo 
26: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp 
27: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq 
28: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr 
29: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss 
30: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt 
31: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu 
32: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv 
33: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww 
34: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww 0 
35: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww 0 yy 
36: 11 22 33 44 55 66 77 88 99 aa 0 cc dd ee ff gg hh ii jj kk ll mm nn
oo pp qq rr ss tt uu vv ww 0 yy zz 



------------------------------------------------------------------------



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