What are the potential pitfalls of directly echoing a text with variables in PHP without assigning values first?

Directly echoing a text with variables in PHP without assigning values first can lead to errors or unexpected output if the variables are not defined or have incorrect values. To avoid this issue, always assign values to the variables before echoing them in the text.

// Assign values to variables before echoing
$name = "John";
$age = 30;

echo "Name: $name, Age: $age";