Call to a member function count() on array code example

Example 1: Call to a member function count() on string

count($project->tasks)

Example 2: Call to a member function count() on string

h2>{{{ $project->name }}}</h2>

@if ( count($project->tasks)==0)
    There are no tasks for this project.
@else
    <ul>
        @foreach( $project->tasks as $task)
            <li><a href="{{ route('projects.tasks.show', [$project->slug, $task->slug]) }}">{{ $task->name }}</a></li>
        @endforeach
    </ul>
@endif

Example 3: double function call javascript

//It means that the first function ($filter) returns another 
//function and then that returned function is called immediately. 
//For Example:
function add(x){
  return function(y){
    return x + y;
  };
}

var addTwo = add(2);

addTwo(4) === 6; // true
add(3)(4) === 7; // true

Example 4: call to a member function guessextension() on string

// I had to change this:
public function getImage(): ?string {}
public function setImage(string $image): self {}

// To this (both without 'string'):
public function getImage() {}
public function setImage( $image): self {}