declare a function with single parameter in PHP

function singleParameter($parameter) {
  //code logic
}

This is an example of a function declaration in PHP. The function is called ‘singleParameter’ and takes a single parameter named ‘parameter’. Inside the function, we can write whatever code logic we want the function to perform with the parameter. We can then call this function from elsewhere in our code, and the function will run with the parameter that was supplied.