PHP is an acronym for “PHP: Hypertext Preprocessor” and can run on a webserver
A PHP script can be placed anywhere in a PHP file as long as it looks like this:
<?php //Scripts go here ?>
You can save a PHP file as FileName.php
In Php, you can create a comment by using double slashes (as in the script above).
In PHP, all variables start with a dollar sign followed by the name of the variable. If you want to assign a value to the variable you can do it as shown below:
<?php $variable_1 = 1; $greeting = "Hello World"; ?
If you want to concatenate two variables, you can do this by using the ‘.’
<?php $var1 = "Hello"; $var2 = "World"; $var3 = $var1 . $var2; echo $var3; //Will output: Hello World ?>
If you want to add two numbers, you need to use ‘+’ if you use ‘’ you will end up with the two numbers next to each other.
In PHP, you can use either an ‘Echo’ statement or a ‘Print’ statement. Examples of Echo and Print statements can be seen below:
<?php $var = "Hello World"; echo $var; //Output will be: Hello World! print $var; //Output will be: Hello World ?>
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