Hello,
I'd like to propose a new feature to PHP: The in Operator
Bob mentioned a few weeks ago he wants such an operator in PHP and today I
stumbled over
http://nikic.github.io/2012/07/27/How-to-add-new-syntactic-features-to-PHP.html
again,
which uses the in operator as a sample.
Use cases:
$obj = new StdClass;
$obj->prop = "value";
$languages = ["PHP", "C", "Java"];
var_dump("PHP" in $languages); // true
var_dump("Python" in $languages); // false
var_dump(0 in $languages); // false
var_dump("0x0" in ["0e3"]); // false
var_dump("prop" in $obj); // true
var_dump("foo" in $obj); // false
var_dump("Hello" in "Hello World!"); // true
For strings, it would replace `strpos("Hello World!", "Hello") !== false)`,
for arrays it would replace `in_array($needle, $haystack, true)`
and for objects it would be a replacement of property_exists($class,
$property)`.
This change would mainly be syntax sugar, but I think it's worth because:
* `"0x0" in ["0e3"]` would return false while `in_array("0x0", ["0e3"])`
returns true, that's probably an edge case, but there may be a lot of
people that don't use the `$strict` parameter, see http://3v4l.org/0K7E5
* It would solve the issue that it's hard to remember the order of the
arguments for in_array and strpos, just had to look it up again.
Bob would volunteer to implement that feature.
Best Regards
Niklas Keller
