Doc #67263 [Opn->Nab]: Regex incorrect in User-defined functions doc'n

Edit report at https://bugs.php.net/bug.php?id=67263&edit=1 ID: 67263 Updated by: levim@php.net Reported by: lewis dot berman at verizon dot net Summary: Regex incorrect in User-defined functions doc'n -Status: Open +Status: Not a bug Type: Documentation Problem Package: Documentation problem Operating System: Windows 7 PHP Version: Irrelevant Block user comment: N Private report: N New Comment: The regular expression is defining the identity of the function name, not all of the requirements around it. Additionally, in actual code a user-defined function is guaranteed to not be at the start of the string; it will always have function [&] come before it. The documentation could perhaps be improved but it's not a bug. Previous Comments: ------------------------------------------------------------------------ [2014-05-13 03:49:02] lewis dot berman at verizon dot net Description: ------------ --- From manual page: http://www.php.net/functions.user-defined --- Regex in the following text requires a leading caret ("^"): "A valid function name starts with a letter or underscore, followed by any number of letters, numbers, or underscores. As a regular expression, it would be expressed thus: [a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*." I.e., the regex should be ^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*. Otherwise the subject string '014A7' will match, and that is not in accordance with the text. The script was run under Bitnami wampstack-5.4.28-0. Test script: --------------- <?php $match_result = preg_match("/[a-zA-Z][a-zA-Z0-9]*./", '014A7'); echo $match_result; $match_result = preg_match("/^[a-zA-Z][a-zA-Z0-9]*./", '014A7'); echo $match_result; ?> Actual result: -------------- The script returns 0 for the first match, 1 for the second. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67263&edit=1