What does the error "Fatal error: Cannot use string offset as an array" in PHP indicate and how can it be resolved?

The error "Fatal error: Cannot use string offset as an array" in PHP indicates that you are trying to access an index of a string as if it were an array. To resolve this issue, you need to ensure that you are treating the variable as a string and not an array.

// Example of resolving the error "Fatal error: Cannot use string offset as an array"
$myString = "Hello World";
$index = 0;

// Correct way to access characters in a string
echo $myString[$index];