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Functions in php

What is the syntax for defining a function in PHP?
Function myFunction()
MyFunction()
Def myFunction():
MyFunction:
Which of the following is not a valid way to call a function in PHP?
MyFunction();
$this->myFunction();
MyClass::myFunction();
Call_user_func('myFunction');
MyFunction;
What does the 'return' statement do in a PHP function?
Ends the execution of the function and returns a value
Prints a message to the screen
Assigns a value to a variable
Calls another function
Which of the following is an example of a built-in PHP function?
Strlen()
MyFunction()
Print()
Array_push()
Sort()
What does the array_push() function do in PHP?
Adds one or more elements to the end of an array
Removes the last element from an array
Sorts the elements of an array in ascending order
Returns the number of elements in an array
Which of the following is the correct way to access an element in a multidimensional array in PHP?
$array[0][1]
$array[1,0]
$array[0]->[1]
$array[1][0]
$array[0,1]
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