info/phpapprentice
1
0
Fork 0
mirror of https://github.com/restoreddev/phpapprentice.git synced 2025-08-03 13:27:35 +02:00
Code Issues Releases Wiki Activity

Updated basics chapter with how to run the code

Browse Source
This commit is contained in:
Andrew Davis
2019-01-07 22:50:19 -06:00
parent 36252d446b
commit 0e07aa6b25
1 changed files with 23 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
chapters/basics.md
View File

@@ -1,8 +1,10 @@
If you want to follow along by writing code, start by downloading a code editor. I recommend
[Visual Studio Code](https://code.visualstudio.com/) or [Sublime Text](https://www.sublimetext.com/).
Next, create a new file in your editor called `basics.php` and save it anywhere on your computer like a folder
in your documents called `phpapprentice`. Now, we can write some PHP.
In the tradition of our ancestors, let's start with a hello world program.
All PHP files must start with a `<?php` tag unless it is for a html template. All PHP files must start with a `<?php` tag unless it is for a html template.
(We will learn about html templates later.) (We will learn about html templates later.)
```php ```php
<?php <?php
@@ -16,12 +18,10 @@ First, the echo keyword tells PHP to output some text.
echo "I am some text\n"; echo "I am some text\n";
``` ```
Second, PHP stores text in strings. Second, PHP stores text in strings. To write a string, you surround letters with single or double quotes.
To write a string, you surround letters with single or double quotes.
Double quoted strings can hold special characters like `\n` which tells PHP to start a new line. Double quoted strings can hold special characters like `\n` which tells PHP to start a new line.
```php ```php
"\nI am a string on a new line"; echo "I am a string on a new line\n";
``` ```
Third, all lines of code in PHP must end in a semi-colon. Third, all lines of code in PHP must end in a semi-colon.
@@ -31,5 +31,21 @@ echo "No semi-colon is a no-no\n";
Using semi-colons means we can write multiple statements on one line. Using semi-colons means we can write multiple statements on one line.
```php ```php
echo "Hello"; echo " World\n"; echo "PHP"; echo " Apprentice\n";
``` ```
To execute the code you have written, make sure you have [PHP installed](/installing-php.html).
Then, open a terminal app, either Terminal on MacOS or Powershell on Windows. In the terminal,
open the folder where you created the `basics.php` file using `cd`. For example, on Windows run `cd C:\%userprofile%\Documents\phpapprentice` and on Mac run `cd ~/Documents/phpapprentice`. Finally, you can execute the file by running `php basics.php`.
In your terminal, you should see:
```bash
Hello World!
I am some text
I am a string on a new line.
No semi-colon is a no-no
PHP Apprentice
```
With any code that we explore in future chapters, I recommend writing a PHP file for it.
It is a great way to get some practice with the language.