From:
Operating system: Any
PHP version: 5.3.8
Package: Arrays related
Bug Type: Feature/Change Request
Bug description:Additional argument for array_map to ignore references
Description:
------------
If a callback function for array_map calls array_map again for array
arguments, it is possible to cause infinite recursion for arrays with
cyclic references.
While this is NOT a bug and everything works as expected, it would be nice
to have a flag to array_map, that address this issue.
Current syntax for array_map prevents adding new parameters at the end
(arguments for the callback go there). However an additional optional
parameter may be added at the begining. Since the first argument is always
a callback, the form with additional flags can be easily distinguished:
array_map(callback, array, ...) <-- old form
array_map(non-callback, callback, array, ...) <-- with flags as 1st arg
Test script:
---------------
// WARNING: CAUSES INFINITE RECURSION!
function fn($arg) {
if (is_array($arg)) {
return array_map('fn', $arg);
} else {
return $arg; // in a real code something will be done here
}
}
$array = array(1, 2, 3);
$array[] = &$array;
fn($array);
--
Edit bug report at https://bugs.php.net/bug.php?id=60662&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=60662&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=60662&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=60662&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=60662&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=60662&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=60662&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=60662&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=60662&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=60662&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=60662&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=60662&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=60662&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=60662&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=60662&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=60662&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=60662&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=60662&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=60662&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=60662&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=60662&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=60662&r=mysqlcfg
