How can "string" and "integer" keywords be used in PHP code effectively?

To effectively use the "string" and "integer" keywords in PHP code, you should ensure that variables are explicitly declared as either strings or integers to avoid unexpected behavior or errors. This helps improve code readability and maintainability by clearly defining the data types being used.

// Example of using "string" and "integer" keywords in PHP code

// Declaring a string variable
$stringVar = "Hello, World!";

// Declaring an integer variable
$intVar = 42;

// Displaying the values
echo $stringVar . "<br>";
echo $intVar;