From:             [EMAIL PROTECTED]
Operating system: Windows 98
PHP version:      4.2.3
PHP Bug Type:     Feature/Change Request
Bug description:  substr does not always return a string

substr($s,$n,$m) is supposed to always return a string (at least if $s is a
string and $n and $m are integers).

However:

   is_string(substr($s,strlen($s),$m)) 

returns false, so substr did not return a string.

Example:
$s="<AB attr = \n\"value\"  >";
echo is_string("")."<BR>\n";
echo "substr(\"A\",0,1):".is_string(substr("A",0,1))."<BR>\n";
echo "substr(\"A\",0,0):".is_string(substr("A",0,0))."<BR>\n";
echo "substr(\"A\",1,1):".is_string(substr("A",1,1))."<BR>\n";
echo "substr(\"A\",1,0):".is_string(substr("A",1,0))."<BR>\n";

-- 
Edit bug report at http://bugs.php.net/?id=20695&edit=1
-- 
Try a CVS snapshot:         http://bugs.php.net/fix.php?id=20695&r=trysnapshot
Fixed in CVS:               http://bugs.php.net/fix.php?id=20695&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=20695&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=20695&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=20695&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=20695&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=20695&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=20695&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=20695&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=20695&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20695&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=20695&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=20695&r=isapi

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