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>> SPEAKER: Rather than simply redirect the
user back to my form, if he or she

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fails to provide all of the required
fields, let's instead be a little more

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instructive and inform him or
her what they need to do in

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order to proceed further.

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So take a look here at froshims-2.php.

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The only change now I've made is to
remove bootstrap for now, just to keep

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things a little bit simpler, and also
to specify that the action of this

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form shall be register-2.php.

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>> Let's then take a look at register-2.

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Notice that this file is mostly HTML.

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But inside of the body tag
are a number of PHP tags.

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>> As PHP's interpreter encounters those
tags, it will indeed execute the code

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within them.

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What will be executed in
this particular case?

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Well notice, we'll check with an "if."
If name is empty, or gender is empty,

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or dorm is empty, "then." And the "then"
here is implied by this colon.

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>> PHP does, like C, support curly braces
for the body of its if blocks.

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But it also supports this colon, which
means anything that comes hereafter,

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if this if condition is
true, shall happen.

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Now if what follows that colon is just
some raw HTML, as in this case, what

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will happen is that the interpreter will
simply spit out that raw HTML.

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>> But as soon as we encounter another PHP
tag, as we do here on this line,

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"else" we will do the following.

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We'll claim, in raw HTML, or really just
text, that you are registered.

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Well, not really.

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Then, unlike C, we now need to specify
more explicitly, because we're using

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these colons, that the if ends here.

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>> Now let's take a look
at the final result.

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Here, in froshims-2, I have the
form that I originally had.

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Let's go ahead and fill
out David Malan.

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He'll be a captain.

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He'll be male, but he
won't have a dorm.

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Rather, let's simply proceed
to register.

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>> You must provide your name,
gender and dorm.

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Go back.

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In other words, rather than simply
redirect me back to that froshims form

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and leave it to me to figure out what
actually went wrong, here, I've been

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informed proactively that I've
done something wrong.

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And I've been given an opportunity
to go back.

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