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Doc Bug #23563 base_convert is broken
Submitted: 2003-05-09 08:37 UTC Modified: 2004-04-01 04:51 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:0 (0.0%)
From: jaakkoho at paju dot oulu dot fi Assigned:
Status: Closed Package: Documentation problem
PHP Version: 4.3.1 OS: Linux 2.4 (Debian)
Private report: No CVE-ID: None
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From: jaakkoho at paju dot oulu dot fi
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 [2003-05-09 08:37 UTC] jaakkoho at paju dot oulu dot fi 
Converting a decimal to n-base and then back to decimal 
failed: 
 
print base_convert(base_convert("10000000000000001", 10, 
36), 36, 10); 
 
output: 10000000000000000 (the last '0' should be '1') 
 
Bug appears only if strlen($value_to_convert) > 16.

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AllCommentsChangesGit/SVN commitsRelated reports
 [2003-05-11 02:07 UTC] moriyoshi@php.net 
PHP attempts to convert the numeric string to a double value within base_convert() function. And during this conversion, some lower digits may be lost due to the precision of the double value, which depends on the platform.

http://www.php.net/manual/en/language.types.float.php
 [2003-09-10 21:15 UTC] hholzgra@php.net 
see also 23564
 [2004-04-01 04:51 UTC] irchtml@php.net 
This bug has been fixed in the documentation's XML sources. Since the
online and downloadable versions of the documentation need some time
to get updated, we would like to ask you to be a bit patient.

Thank you for the report, and for helping us make our documentation better.
 
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