Is there a neat way to initialize a variable used in a closure? …does not work An example use case is for array_reduce where we might want to count the array elements… This will work – declaring $count by reference and incrementing from null will not yield an error – but I don’t …
Tag: closures
Laravel/PHP: is there a limit on number of arguments passed to closure function
When I was trying to override the default password reset function, I ran into some weird issue with closure. The 3rd variable $pwAge has to be passed to the closure via if passed along side with the first two arguments as this: I will get the following error when this function is called: What am I missing her…
Is it good pratice to add closure inside constructor?
I have added closure inside the constructor and unsure of its performance as well as best practice. What is the best way to do that if it is not the right way to do it? Answer I have an own array class with a lot of functions (or closures) defined in the constructor. This type of definition of functions also
Rewriting an anonymous function in php 7.4
There is the following anonymous recursive function: I try to rewrite to version 7.4, but there is an error, please tell me what I’m missing? Notice: Undefined variable: f Fatal error: Uncaught Error: Function name must be a string Answer Just like Barmar said, you can’t use $f from the outside sc…
PHP 7.2 Function create_function() is deprecated
I have used create_function() in my application below. But for PHP 7.2.0, create_function() is deprecated. How do I rewrite my code above for PHP 7.2.0? Answer You should be able to use an Anonymous Function (aka Closure) with a call to the parent scoped $delimiter variable, like so:
Anonymous functions in WordPress hooks
WordPress hooks can be used in two ways: using callback function name and appropriate function using anonymous function (closure) Is there any difference for WordPress what way to use? What is prefered way and why? Answer The disadvantage of the anonymous function is that you’re not able to remove the a…
How can i pass a single additional argument to array_map callback in PHP?
How can i pass a single additional argument to array_map callback? In my example i’d like to pass $smsPattern (as a second argument, after current element in $featureNames) to the function array_map …