PHP - how to change title of the page AFTER including header.php?
page.php:
header.php:
<?php echo $title; ?>&
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<span>2020-12-13 03:21</span>
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<p><strong>Add this code on top your page</strong></p>
<pre><code><?php
$title="This is the new page title";
?>
</code></pre>
<p><strong>Add this code on your Template header file (include)</strong></p>
<pre><code><title><?php echo $title; ?></title>
</code></pre>
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<span>2020-12-13 03:26</span>
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<p>you can set using JavaScript</p>
<pre><code><script language="javascript">
document.title = "The new title goes here.";
</script>
</code></pre>
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<span>2020-12-13 03:27</span>
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<p>Expanding a little on we.mamat's answer,
you could use a <strong>preg_replace</strong> instead of the simple replace and remove the need for a <strong>%title%</strong> altogether. Something like this:</p>
<pre><code><?php
ob_start();
include("header.php");
$buffer=ob_get_contents();
ob_end_clean();
$title = "page title";
$buffer = preg_replace('/(<title>)(.*?)(<\/title>)/i', '$1' . $title . '$3', $buffer);
echo $buffer;
?>
</code></pre>
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<span>2020-12-13 03:31</span>
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<p>What you can do is, you store the output in a variable like:</p>
<p><strong>header.php</strong></p>
<pre><code><?php
$output = '<html><title>%TITLE%</title><body>';
?>
</code></pre>
<p>PS: You need to remove <strong>all</strong> echos/prints etc so that all possible output is stored in the <code>$output</code> variable.</p>
<p>This can be easely done, by defining <code>$output = '';</code> at the start of the file and then <em>find/replace</em> <code>echo</code> to <code>$output .=</code>.</p>
<p>And then replace the <code>%TITLE%</code> to what you need:</p>
<pre><code><?php
include("header.php");
$title = "TITLE";
$output = str_replace('%TITLE%', $title, $output);
echo $output;
?>
</code></pre>
<p>Another way is using <code>javascript</code> in your code, instead of:</p>
<pre><code><title><?php echo $title; ?></title>
</code></pre>
<p>Put this in there:</p>
<pre><code><script type="text/javascript">
document.title = "<?=$title;?>"
</script>
</code></pre>
<p>Or jQuery, if you prefer:</p>
<pre><code><script type="text/javascript">
$(document).ready(function() {
$(this).attr("title", "<?=$title;?>");
});
</script>
</code></pre>
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<span>2020-12-13 03:36</span>
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<p>It's very easy.
Put this code in header.php </p>
<pre><code> <?
$sitename = 'Your Site Name'
$pagetitle;
if(isset($pagetitle)){
echo "<title>$pagetitle." | ". $sitename</title>";
}
else {
echo "<title>$sitename</title>";
}
?>
</code></pre>
<p>Then in the page put there :</p>
<pre><code> <?
$pagetitle = 'Sign up'
include "header.php";
?>
</code></pre>
<p>So if you are on Index.php , The title is Your Site Name.
And for example if you are on sign up page , The title is Sign up | Your Site Name</p>
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<span>2020-12-13 03:38</span>
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<p>Use a <strong>jQuery</strong> function like this:</p>
<p><code>$("title").html('your title');</code></p>
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