Global Variables

NULL

Modifier Function

Modifies the value

Original number: 5

Modified number (doubled): 10

PHP Built-in functions (1000s)!

print_r: Array ( [0] => 1 [1] => 2 [2] => 3 )

var_dump: array(3) { [0]=> string(1) "1" [1]=> int(2) [2]=> float(3) }

4 //Returns: 4

* Wp function examples *

get_the_post_thumbnail_url( get_the_ID(), 'full' );

get_the_content();

get_the_title();

Use() function

Include vs require

The include statement includes and evaluates the specified file. If the file is not found or cannot be accessed, a warning message is issued, but the script execution continues.

The require statement does the same as include except if the file is not found, a fatal error occurs, and script execution stops.

Static Variable-show in PHP Sandbox

Class Stucture

Thank of a class as a blueprint for creating objects. It's a way to group functions and variables.

public: Accessible from outside the class.

protected: Accessible within the class and its subclasses.

private: Accessible only within the class itself.

Server Architecture

All public content inside www or public_html folder.

Security Considerations

Sensitive info should be stored outside root folder

Frameworks and Libraries

isset()

Shorthand If statement