How did it go, were you able to complete the challenge? 0:00 If no, no worries you can watch my solution compared to what you wrote and 0:03 then try the challenge again. 0:08 In step one we were asked to create a variable named programmer and 0:11 set it's value equal to Ada Lovelace, we start with the dollar sign. 0:15 Programmer equals and then within quotes, Ada Lovelace. 0:19 Step two we were to create another variable named year, and 0:25 set its value equal to 1843. 0:29 Dollar sign year equals 1843. 0:34 Because this is an integer and we're going to use it as a string. 0:38 It doesn't really matter if we use quotes or not quotes. 0:43 Either one would work. 0:47 PHP will change your variables to best match the situation. 0:50 Step 3, replace programmer in the message string with the variable programmer. 0:55 And replace year in the message string with the variable year. 1:00 Because our message string was within single quotes, 1:05 if we added the programmer variable, directly within the string, 1:09 it would just give us $programmer. 1:14 Instead, before programmer, I close the string, and 1:18 use the string concatenation character, period. 1:22 I then put programmer, followed again by another period. 1:27 And this time, I changed the last part of our message to double quotes. 1:32 When a variable is used within a string that has double quotes, 1:38 the value of that variable is used. 1:43 Step four is to display the message string to the screen. 1:46 In this case, we used echo message. 1:50 If your solution was different than mine, that's great. 1:54 Seldom is there only one solution. 1:57 If you see something interesting in my code, 2:00 you should try implementing it in your own program. 2:02 Keep practicing so you can master these new skills. 2:06 Until next time, happy coding. 2:09