#50983 [Opn->Ver]: default value for $length parameter of substr_compare() is incorrect in docs

ID: 50983 Updated by: rquadling@php.net Reported By: guy dot paddock at gmail dot com -Status: Open +Status: Verified Bug Type: Documentation problem Operating System: Debian Etch PHP Version: 5.2.12 New Comment: According to the source code at http://svn.php.net/viewvc/php/php- src/trunk/ext/standard/string.c?view=markup#l7865, the default value can be expressed as ... max(strlen($str), strlen($main_str) - $offset) Previous Comments: ------------------------------------------------------------------------ [2010-02-10 01:07:53] guy dot paddock at gmail dot com Description: ------------ The documentation for substr_compare() indicates that the default value for the $length parameter is the string length of the $main_str parameter, but this doesn't appear to be the case. Reproduce code: --------------- --- From manual page: function.substr-compare#Description --- <?php $a = "abc123"; $b = "abc"; echo "Is the documentation correct? "; echo ((substr_compare($b, $a, 0) == (substr_compare($b, $a, 0, strlen($b)))) ? 'true' : 'false'); echo "\n"; ?> Expected result: ---------------- Is the documentation correct? true Actual result: -------------- Is the documentation correct? false ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50983&edit=1