Single quotes vs double quotes in PHP (plus how to do multi-line strings using heredocs and nowdocs)

Показать описание

To define a string in PHP, you can surround some text with single quotes, or with double quotes. So what's the difference?

The difference is how the contents of the string are evaluated.

In this video we'll learn the difference between single-quoted strings and double-quoted strings in PHP. We'll also learn how to use a heredoc and nowdoc to easily create a multi-line string. We'll learn about variable interpolation in double-quoted strings, and escape sequences to insert special characters.

Resources:

Code shown in the video:

0:00 Intro
0:19 Single-quoted strings
1:01 Double-quoted strings
2:10 Performance
2:49 Heredocs
4:12 Nowdocs
4:46 Summary