From: pluggz24 at yahoo dot com Operating system: windows PHP version: Irrelevant PHP Bug Type: Feature/Change Request Bug description: printf()'s implementation of length/precision is inconsistent w/ other language
Description: ------------ from the first user comment on http://us2.php.net/printf, (not written by me): I'm not sure if it is a feature or a bug :) but it's definately a gotcha! The length.precison in a printf float is different from any other language's printf. The difference is outlined below in a small program written in C, PERL, and PHP using the printf function: In C: ...>cat pf-test.c main() { printf("12345678901234567890\n"); printf("%09.2f\n",22.0/7.0); } ...>gcc pf-test.c -o pf-test ...>./pf-test 12345678901234567890 000003.14 NOTE: Nine *total* displayed chars, two behind the decimal Now PERL: ...>cat pf-test.pl #!/usr/bin/perl printf("12345678901234567890\n"); printf("%09.2f\n",22.0/7.0); ...>perl pf-test.pl 12345678901234567890 000003.14 NOTE: *Identical* to 'C' (and awk, and ...) Now PHP: ...>cat pf-test.php <?php printf("123456789012340567890\n"); printf("%09.2f\n",22.0/7.0); ?> ...>php -q pf-test.php 123456789012340567890 000000003.14 NOTE: Nine digits before the decimal, the decimal, and two places after. This tends to hide in proportional fonts, but can cause wierd alignment issues and gaps, particularly if you are using pre-formatted mono-spaced text. Reproduce code: --------------- <?php printf("123456789012340567890\n"); printf("%09.2f\n",22.0/7.0); ?> Expected result: ---------------- 12345678901234567890 000003.14 Actual result: -------------- 123456789012340567890 000000003.14 -- Edit bug report at http://bugs.php.net/?id=26952&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=26952&r=trysnapshot4 Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=26952&r=trysnapshot5 Fixed in CVS: http://bugs.php.net/fix.php?id=26952&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=26952&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=26952&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=26952&r=needscript Try newer version: http://bugs.php.net/fix.php?id=26952&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=26952&r=support Expected behavior: http://bugs.php.net/fix.php?id=26952&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=26952&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=26952&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=26952&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26952&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=26952&r=dst IIS Stability: http://bugs.php.net/fix.php?id=26952&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=26952&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=26952&r=float
