PHP core technology-array pointers

Operation of Array pointers:

Moves the array pointer: Next () goes down and gets the value of the current element. Prev () goes up and gets the value of the current element. End () moves to the last element unit gets the value of the last element Reset () moves to the first cell to get the value of the first element. Returns False if the move is unsuccessful.   The arguments are all arrays that need to be manipulated and are reference passes. Get information about the element that the pointer points to: the key ()//Gets the subscript current () of the element that is pointed to by the present array pointer; Gets the element that the current array pointer points to only the data is not moved the pointer also has a mixed operation: that is, you can get information about the current pointer element (the key value) or move the pointer each ();     Gets the information for the current element (information for the key and value), a. Moving pointers: We can sometimes use each of the attributes to traverse an array: We should use the loop structure to work with each.     Match condition: returns False when each to the last element.   List function: Limit of list: only function for index array. Use the list and each to complete the traversal but the array pointer is not reset after using each traversal, and needs to be reset manually.