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Doc Bug #61532 Apostrophe modifier in *printf is broken
Submitted: 2012-03-27 21:28 UTC Modified: 2015-01-14 14:56 UTC
From: iblue at gmx dot net Assigned:
Status: Not a bug Package: Strings related
PHP Version: 5.4.0 OS: GNU/Linux
Private report: No CVE-ID: None
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From: iblue at gmx dot net
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 [2012-03-27 21:28 UTC] iblue at gmx dot net 
Description:
------------
When I use the apostrophe (') modifier to select a padding character in printf, 
it behaves buggy, when the padding length itself is prefixed by zeroes.

Test script:
---------------
<?php
echo sprintf("%'.9s\n", "foo");
echo sprintf("%'.09s\n", "foo");

Expected result:
----------------
......foo
......foo


Actual result:
--------------
......foo
000000foo

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 [2012-04-12 10:09 UTC] johannes@php.net 
The current behaviour seems to be in line with what libc does, both on Linux and Solaris (and gcc and suncc):

$ cat test.c
#include <stdio.h>

void main() {
	printf("%'.09i\n", 123);
}

$ gcc -otest test.c
$ ./test 
000000123
 [2012-04-12 10:13 UTC] johannes@php.net
-Type: Bug +Type: Documentation Problem
 [2012-04-12 10:13 UTC] johannes@php.net 
It should be  documented that 0 as padding specifier overwrites a manually set one.
 [2015-01-14 14:55 UTC] danack@php.net 
Automatic comment from SVN on behalf of danack
Revision: http://svn.php.net/viewvc/?view=revision&amp;revision=335742
Log: Added detail about padding character for bug 61532
 [2015-01-14 14:56 UTC] danack@php.net
-Status: Open +Status: Not a bug
 [2015-01-14 14:56 UTC] danack@php.net 
It has been documented that 0 as padding specifier overwrites a manually set one.
 
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