From: [EMAIL PROTECTED]
Operating system: Linux (but I think all)
PHP version: 4.0.6
PHP Bug Type: Feature/Change Request
Bug description: The result of create_function should be accepable to the parser
While trying to build a set of higher-order search and
match functions, I came across the "null at the front of
the lambda name" refered to in bug #10721.
It would ne very neat if one could write:
function _not_($f) {
return create_function('$x', "return !$f(\$x);");
}
and so on for _and_ and _or_(with two function args).
Once a set of primitive match functions are defined you
can then define complex criteria. However, the parser
rejects the names produced create_function.
The following works but it clearly yucky:
function f_not($f) {
$f = substr($f, 1);
return create_function('$x',
"return !call_user_func(chr(0).'$f', \$x);");
}
For these lambdas to be true closures, they should be
callable from other created functions.
--
Edit bug report at: http://bugs.php.net/?id=12405&edit=1
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