String Operators

Quick reference

• 00:04 In the last video, we talked about logic operators.
• 00:07 In this video, I wanna talk about string operators.
• 00:10 And this is the last batch of operators that we're gonna deal with.
• 00:12 After this, we're gonna get into conditional statements.
• 00:15 But string operators,
• 00:16 pretty important and basically we're looking at two things here.
• 00:19 Well, basically one thing, and the thing we're looking at is concatenation.
• 00:24 That's concatenation, and
• 00:28 let's just erase this and start over and let's go first name, last.
• 00:33 Create two more variables and
• 00:34 I'm gonna add John to the first name or first variable.
• 00:39 And for the last, type in elder.
• 00:42 Let's say we wanted to put these two together.
• 00:44 We had math operator that would add numbers together.
• 00:48 But let's go first + last and see what happens.
• 00:54 If we wanna smush these two together and
• 00:56 make John Elder, some programming languages let you do addition.
• 01:01 PHP is not one of them.
• 01:02 Math operators are out, what do we do?
• 01:04 We use a string operator which is a period.
• 01:08 We save this, hit reload, and we get JohnElder.
• 01:11 You noticed, there's no space in between.
• 01:13 We could put a space by creating a string with a space, and
• 01:16 then another period if we did that, but we get space there, but
• 01:20 concatenation is very important, that's the first string operator.
• 01:25 There's also this sort of, it looks like assignment operator and
• 01:28 that's in fact what we're doing, we're concatenating and assigning this to that.
• 01:32 So if we save these, it looks it's the same thing but
• 01:35 that's not actually what's going on here.
• 01:38 If we echoed out, let's create a line break in PHP
• 01:43 like we did before and then echo out first.
• 01:47 What we're doing here is we're concatenating, smooshing them together,
• 01:51 and assigning.
• 01:53 So first, changes from John to John Elder,
• 01:56 because that's what the concatenation assignment operator does.
• 02:00 Save this, hit reload, we see boom, John Elder.
• 02:03 On the other hand, if we just do a regular concatenation, if we hit
• 02:08 reload, the first line, it's smooshing them together and echoing it out but
• 02:13 it's not changing the variable, it's not changing our first variable.
• 02:17 That continues to be John, and so the second line, it just prints out John.
• 02:21 Depending on what you wanna do, if you just wanna smoosh two things together,
• 02:25 just use your regular concatenation operator.
• 02:27 If you want to smooch two things together and then save the them
• 02:31 into the first variable, use your assignment operatory looking thing there.
• 02:36 Save this, come back, hit reload, boom, John Elder.
• 02:38 You can always add stuff.
• 02:43 And concatenate until your heart's content.
• 02:46 And that is actually very, very useful.
• 02:49 You'll use this concatenation thing all the time.
• 02:51 Anyway, that string operators, very useful and now we are done with operators.
• 02:56 We went through arithmetic operators, assignment, comparison, increment,
• 02:59 logic, and now string.
• 03:01 In the next video, we're gonna start talking about conditional statements,
• 03:04 if statements basically, if else statements.
• 03:06 A lot of fun. You could do a lot of stuff with them and
• 03:08 we're gonna start to add back in the stuff we've already learned,
• 03:12 specifically the comparison operators and the logic operators.
• 03:15 And you'll finally get to see them used in actual real life examples,
• 03:18 starting in the next video.

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