Learn PHP Code

The tutorials in this archive help beginners learn how to read, write & use PHP code in WordPress and Genesis child themes. Once you understand what every function in a code block does then you can gain a deeper understanding of how the code works with Genesis, WordPress and your database.

if else

if .... else is used as a conditional statement or conditional expression which enables you to execute code if a specific condition returns

array

There's 3 types of functions which use array() out of the dozens of different array functions you can use in PHP. This tutorial explains

class_exists

You can use class_exists to check if a plugin is active. ( Watch the video below which tests the code examples in this tutorial ). You

foreach

The foreach construct only works with arrays. This means you must either use an array like this: array( '1', '2', '3' ); Or functions

sprintf

sprintf is similar to printf however is used to return the result as a value for a variable to be used later rather than output

add_action

add_action is a function which you'll see in WordPress, Genesis & other theme files. You've probably seen code in a file which looks

printf

You've probably seen code in your files which looks like this: [code] printf('%s World', $var ); [/code] This code includes a

variable

You've probably seen code which includes the $ dollar sign like this: [code] $output [/code] This is whats called in PHP language, a

Ternary Operator

There's at least 3 ways to code if conditionals and else statements in WordPress using PHP. In the first 2 examples below, we'll use the