we have that string:
\"I like to eat apple\"
How can I obtain the result \"apple\" ?
// Your string
$str = "I like to eat apple";
// Split it into pieces, with the delimiter being a space. This creates an array.
$split = explode(" ", $str);
// Get the last value in the array.
// count($split) returns the total amount of values.
// Use -1 to get the index.
echo $split[count($split)-1];