From: nilsandre at gmx dot de
Operating system: Debian 6, Kernel 2.6.32-5-686
PHP version: 5.4.6
Package: Scripting Engine problem
Bug Type: Bug
Bug description:anonymous function/closure use variable problem
Description:
------------
In an anonymous function, the use clause does not accept a variable that is
denoted as ${'variable'}, whereas the equivalent $variable of course
works.
See test script below.
Test script:
---------------
$x = 1; // global scope
$printGlob = function() use ($x) {
echo "x = $x".PHP_EOL;
};
$printGlob(); // success, prints x = 1
$x = 2;
$printGlob2 = function() use (${'x'}) {
// Preceeding line yields:
// Parse error: syntax error, unexpected '$', expecting '&' or variable
(T_VARIABLE)
echo "x2 = $x".PHP_EOL;
};
$printGlob2(); // Should parse, and yield x2 = 2
Expected result:
----------------
$f = function() use ($var) { ... };
and
$f = function() use (${'var'}) { ... };
should be considered equivalent and therefore parse properly.
Actual result:
--------------
See test script.
$f = function() use (${'var'}) { ... };
yields a parse error, which in addition is quite confusing.
--
Edit bug report at https://bugs.php.net/bug.php?id=62918&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=62918&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=62918&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=62918&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=62918&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=62918&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=62918&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=62918&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=62918&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=62918&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=62918&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=62918&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=62918&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=62918&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=62918&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=62918&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=62918&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=62918&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=62918&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=62918&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=62918&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=62918&r=mysqlcfg
