In PHP, if $a represents an array with numeric indices, how is the first element accessed?

This question asks about how to access the first element of an array in PHP. Arrays are like lists of data, and each element has a position, called an index.

In PHP, the first element of an array always has an index of 0 (not 1). This is important to remember!

Now let's look at the options:

Option A: $a[1] - This would access the second element, not the first.
Option B: $a[0] - This is the correct way to access the first element of an array.
Option C: $a.1 - This is incorrect syntax for accessing array elements in PHP.
Option D: $a.0 - This is also incorrect syntax.

Therefore, the correct answer is Option B: $a[0]