What are some best practices for passing variables in PHP echo statements?

When passing variables in PHP echo statements, it's best practice to concatenate the variables within the echo statement using the dot (.) operator. This ensures that the variables are properly included in the output string without causing any syntax errors. Additionally, it's important to properly sanitize any user input to prevent security vulnerabilities such as SQL injection. 

// Example of passing variables in PHP echo statement
$name = "John";
$age = 30;

echo "Hello, " . $name . "! You are " . $age . " years old.";

Keywords

variable passing PHP echo concatenation string interpolation escaping characters

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