defining page titles specifically

Question

I'm trying to echo out dynamic php titles depends on page for seo purposes.

I successfully did this the pages I call from database depends on their id's.

Like that:

if (isset($_GET["category_id"])) {
$query = $handler->query("SELECT * FROM categories WHERE category_id = ".$_GET['category_id']." ");
while($r = $query->fetch()) {
  $title = $r["title"];

  }
}

And this is how I echo out:

<title><?php if (isset($_GET["category_id"])) { echo $title; echo " |"; } ?> mypage.com</title>

result:

on category.php?category_id=1 Page title is: "Category 1 | mypage.com"

*

But there are pages which is not static.

for example: index.php, login.php.

*

I want to figure out how to edit my code below to print "Login" on login.php between title tags.

<title>
<?php 
if (isset($_GET["category_id"])) { 
echo $title; echo " |"; 
} 
?> mypage.com
</title>

EDIT

my login.php is like that:

include("header.php");

content.

So I need to define $title for login.php in header.php

I need to add some codes to header.php when user will see different title on login.php, index.php etc.

I'm able to do it category.php?category?id=1 already with the code above, but I need to also make it for login.php, index.php and so on.

Answer 1

There are several ways to do this within the code you outlined.

First, I'm going to simplify some of your code a bit. This also potentially makes it slightly faster:

echo "<title>$title | mypage.com</title>";

This assumes that $title is going to be set, either by the query from when $_GET['category_id'] is set, or from the file that calls it. The great thing about includes is that they can pass variables. So in the login.php and any other file where you are not doing a GET, just specify $title in that file.

Login.php:

$title = 'Login';
include("header.php");

content.

Which would display page title of "Login | mypage.com".