PHP String Interpolation and Concatenation for Clean Text Output

One way to echo text with variables in a clean way in PHP is to use string interpolation. This involves enclosing the variable within curly braces '{' within a double-quoted string. For example:

'name = 'John'; echo 'Hello, {$name}!';

This would output: 'Hello, John!'.

Another method is to concatenate the string and variable using the dot operator. For example:

'name = 'John'; echo 'Hello, ' . 'name' . '!';

This would also output: 'Hello, John!'.