Bug #70344 [Opn]: extract skips valid variable names

Edit report at https://bugs.php.net/bug.php?id=70344&edit=1 ID: 70344 Updated by: cmb@php.net Reported by: danack@php.net Summary: extract skips valid variable names Status: Open Type: Bug Package: Scripting Engine problem Operating System: N/A PHP Version: Irrelevant Block user comment: N Private report: N New Comment: FWIW, the PHP manual defines[1]: | Variable names follow the same rules as other labels in PHP. A | valid variable 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]*' [1] <http://php.net/manual/en/language.variables.basics.php> Previous Comments: ------------------------------------------------------------------------ [2015-08-24 14:36:29] danack@php.net Description: ------------ The extract function skips setting variables that have names that are valid but cannot be written as a simple variable. For example, anything with dots can be written and accessed as a variable like: ${'some.config.setting'} = 'foo'; var_dump(${'some.config.setting'}); But extract considers anything with a dot in to be an invalid variable name, and so skips doing: extract(['some.config.setting'} => 'foo']); fails to extract it. Test script: --------------- $values = [ 'value.with.dot' => 'set from array', ]; extract($values); if (!isset(${'value.with.dot'})) { echo "It's not set\n"; } else { var_dump(${'value.with.dot'}); } ${'value.with.dot'} = "It is a valid variable name, just not one that can be written as a non-interpolated variable."; var_dump(${'value.with.dot'}); Expected result: ---------------- string(14) "set from array" Actual result: -------------- It's not set ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=70344&edit=1