Templating Links and Headers

Quick reference

• 00:04 Okay, so let's start doing some templating.
• 00:07 So the first thing that I notice when I look at all of these pages is that
• 00:11 this whole top thing here up until this first h1 tag
• 00:15 is pretty much the same on every single page.
• 00:18 So, we can just highlight this and copy this and
• 00:22 let's create a file called, header.php.
• 00:30 And if we open that, and just paste in all of this stuff, and
• 00:35 save it, we can come back to our index page, and delete all of that.
• 00:43 Okay, so now the question is, how do we add this back in?
• 00:46 And we've already learned how to use include and require.
• 00:49 And, it's kind of a personal preference but
• 00:51 if you'll remember back to those videos, there's one really
• 00:54 big difference between include and require and that's error messages.
• 00:59 If we don't do this correctly, but if we use include, or the file changes, or
• 01:03 there's a problem, include will give us an error message.
• 01:05 Require will shutdown completely.
• 01:07 And well, this is the top of our web page and if that happens,
• 01:11 nothing else will get rendered.
• 01:13 So, I would tend to wanna use include for this specific part.
• 01:17 So let's go ahead and create a php tag, and just include,
• 01:28 header.php.
• 01:32 Save this, come back and hit reload, nothing seems to have changed.
• 01:36 So, let's go ahead and add this to all the pages on our app.
• 01:41 And those kinda lame to have to come back and do this after we've already done this.
• 01:44 And in a real world, you would do this while you were creating these pages
• 01:49 the first time around, save that multiplication, Save that.
• 01:58 Finally, division, Save that.
• 02:06 So now if we come back here and hit reload and go through, all of these seem to work.
• 02:10 Okay, so what?
• 02:11 Well, let's say we wanna create a new link.
• 02:13 Now instead of opening each of these up and adding that new link,
• 02:16 we could just open our header.php file.
• 02:19 And, maybe we don't wanna add a link,
• 02:21 maybe we wanna change this from addition to adding, right?
• 02:25 So if we save this, come back here and hit reload, now it says adding.
• 02:29 If we click on Subtraction, it says adding.
• 02:31 If we click on multiplication, it says adding.
• 02:34 And if we click on division, it says adding.
• 02:36 So, I think you see just from that quick example how important it is to template
• 02:40 out your stuff.
• 02:41 Just that thing alone can save you days of work.
• 02:45 I mean, imagine if you had a website with 10,000 web pages,
• 02:47 which is not outside the realm of possibility these days,
• 02:51 to change them all by hand which just drive you crazy.
• 02:53 It would take days, weeks.
• 02:55 It would take many, many people to do it or
• 02:57 it would take ten seconds if you properly template it out to your website.
• 03:00 Okay, so that's one quick example of templating.
• 03:03 In the next video, we're gonna do something a little bit different.
• 03:06 We're gonna template out with variables and just give you another spin on this,
• 03:10 another way to look at it.
• 03:11 So that's all for this video.

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