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Bug #81641 strpos() bug if search string is on first column
Submitted: 2021-11-19 16:17 UTC Modified: 2021-11-19 16:38 UTC
From: raxe at msn dot com Assigned:
Status: Not a bug Package: Strings related
PHP Version: Irrelevant OS: Windows 10
Private report: No CVE-ID: None
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 [2021-11-19 16:17 UTC] raxe at msn dot com
$full_string = "HELLOW WORD";
$search_string = "HELLOW";

if (strpos($full_string,$search_string)){ //This return false
  echo "True";
  echo "False";

Expected result:

Actual result:


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 [2021-11-19 16:38 UTC]
-Status: Open +Status: Not a bug -Package: *Regular Expressions +Package: Strings related
 [2021-11-19 16:38 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
> This function may return Boolean false, but may also return a non-Boolean value
> which evaluates to false. Please read the section on Booleans for more
> information. Use the === operator for testing the return value of this function.
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