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Bug #80806 printf does not properly align columns when extended ascii characters like µ
Submitted: 2021-02-27 03:42 UTC Modified: 2021-02-27 04:03 UTC
From: smcbride at msn dot com Assigned:
Status: Not a bug Package: Strings related
PHP Version: 7.4.15 OS: OpenSuse Tumbleweed
Private report: No CVE-ID: None
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Bug Type:
From: smcbride at msn dot com
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 [2021-02-27 03:42 UTC] smcbride at msn dot com
When using a character like µ, printf is off by 1 character in length.  It is shorter that 15s.

printf("%-50s %15s %15s %15s %15s %15s" . PHP_EOL, "Function", "Num Calls", "Avg Time (µs)", "Sum Time (µs)", "Min Time (µs)", "Max Time (µs)");

Test script:
printf("%-50s %15s %15s %15s %15s %15s" . PHP_EOL, "Function", "Num Calls", "Avg Time (µs)", "Sum Time (µs)", "Min Time (µs)", "Max Time (µs)");

Expected result:
Expect it to be the correct spacing


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 [2021-02-27 04:03 UTC]
-Status: Open +Status: Not a bug -Package: Unknown/Other Function +Package: Strings related
 [2021-02-27 04:03 UTC]
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at and the instructions on how to report
a bug at
> Warning
> Attempting to use a combination of the string and width specifiers with
> character sets that require more than one byte per character may result in
> unexpected results.
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