Use of => in PHP

Question

What does this mean in PHP and when is the time to use it?

 =>

Another example.

 foreach ($parent as $task_id => $tod         


        

Answer 1

=> is the array association operator, similar to the = assignment operator.

It is used mainly in array declarations of the form $arr = array( $key=>$value) which is equivalent to $arr[$key] = $value, and of course, in the foreach control structure to assign values to key and value loop variables.