Where does the PHP run?

By: George Langley Emailed: 1641 times Printed: 2121 times    

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This is an important concept for the first-time PHP programmer to understand, so that when you get into string formatting later on, you understand the difference between formatting the on-screen content (as parsed by your browser) and formatting the HTML code (as returned by the server). 

For example "\n" starts a new line in the HTML code, and its results are only seen if you look at the "source HTML". It is NOT the same as <br>! 

before html runs to show a webpage, php code runs first on web server.

so, when there lines as follow:

<table>
<tr>
<td>
<?php
echo "php runs first!";
?>
</td>
</tr>
</table>

the first step is to run php code, we get:

<table>
<tr>
<td>
php runs first
</td>
</tr>
</table>

then, code is sent to browser, and we see somthing~


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