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PHP, which originally stood for Personal Home Page but is now a recursive acronym for "PHP: Hypertext Preprocessor",[1] is for dynamically generating webpage content, which is HTML by default. The Server runs the PHP code, then sends the output to the browser.
PHP Tags
The <?php and ?> tags in PHP are used to define the start and end of PHP scripts. Text outside of these tags are regular HTML. These tags can go anywhere, and they can be used more than once. For example:
<!DOCTYPE html>
<html>
<head>
<title>Example</title>
</head>
<body>
<?php
//PHP code goes here
?>
</body>
</html>Syntax
Like many other programming languages, commands in PHP must be separated using semicolons (;).
Like Scratch, comments can be used to explain code. The text in a comment is not interpreted as code, so it is not run. In PHP, comments can either be defined by using two slashes (//), which makes the rest of the line a comment, with a hash (#), which also makes the rest of the line a comment, or with /* and */. Text within /* and */ become a comment. In PHP, comments can also be used to temporarily disable code by putting /* and */ around it.
Outputting Text
In Scratch, text can be shown with say [] and say [] for () secs. In PHP, text is outputted using echo and print. The two are mostly similar, except echo is slightly faster, and print returns (reports) true when it runs successfully. It is best to use echo in most cases. Here is how it's used:
echo "hello";or
print "hello";