# PHP

echo 'Hello World';
$test = ['Pol', 'Marc', 'Joe'];
echo count($test);
Prints information about a variableprint_r($test);
Dumps information about a variable: var_dump($test);
To concatenate, we use . (not + like in JS)
Or "" will parse the variable, like: "$string1 $string2"
If we know the value is not gonna change, we can define Constants -> define('GREETING', 'Hello friends');

# Arrays

Types
1. Indexed = normal
2. Associative = we can define key-value pairs
- ```
$people = array('Pol' => 29, 'Elen' => 34);
echo $people['Pol'];
//prints 29
```
1. Multidimensional = same like JS

# Loops

For, While, Do..While, Foreach
foreach($array as $element){}

# Conditional Logic

XOR -> exclusive or. Like ||, but only one has to be true (not both)

# Date

echo date('d');
echo date('m');
echo date('Y');
echo date('l');
//We can combine them
echo date('l, d-m-Y')

strtotime -> transforms a string to a timestamp
date can take (format, timestamp)

# Includes

<?php include 'folder/file.php'; ?>
use require when we want everything to stop if the file is not found. Can also use require_once.

# Superglobal Variables

Variables that are available in all scopes
Always written like this: $_SUPERGLOBAL

# WordPress

Setting up local development