What is the difference between using single quotes and double quotes in PHP when outputting text?

In PHP, using single quotes and double quotes to output text can affect how variables and escape sequences are interpreted. Double quotes allow for variable interpolation and escape sequences to be processed, while single quotes treat everything literally. To output text with variables, it is recommended to use double quotes to ensure proper interpolation. 

// Using double quotes for proper variable interpolation
$name = "John";
echo "Hello, $name!";

// Using single quotes will treat variables as literal strings
$name = "John";
echo 'Hello, $name!'; // Output: Hello, $name!

Keywords

PHP single quotes double quotes outputting text string interpolation

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