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Bug #1398 wrong return value
Submitted: 1999-05-11 05:51 UTC Modified: 1999-05-11 07:55 UTC
From: thomas at intermezzo dot de Assigned:
Status: Closed Package: Misbehaving function
PHP Version: 3.0.5 OS: Linux
Private report: No CVE-ID: None
View Developer Edit
 [1999-05-11 05:51 UTC] thomas at intermezzo dot de 
$browser = "Mozilla";
if ( strpos($value, "Mozilla/") == 0)
{ ..... }

$browser = "Lynx";
if ( strpos($value, "Mozilla/") == 0)
{ ..... }


The function returns 0 , once because Mozilla is the first Character and secondly because Mozilla doesn't appear in "Lynx"

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 [1999-05-11 07:55 UTC] sas at cvs dot php dot net 
Your comparison is not correct. See http://www.php.net/manual/html/function.strpos.html

In short, strpos returns false, if the needle is not found. If you compare false with an integer, it is promoted to 0 and as such the expression in the if(...) construct is true.
 
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