PHP函数 - if / else语句的更好结构是什么？ [关闭]

I'm writing a function and wondered if it's best (in regards to performance and coding practices) to handle returning conditions like this:

public function func_1() {
  if ( true == $condition) {
    // Do something
    return true;
  } else {
    return false;
  }
}

or this:

public function func_2() {
  if ( false == $condition ) return false;
  // Do something
    return true;
}

Is there a benefit to encapsulating a bunch of code within an if/else (func_1) or is it best to get the quickest returns out of the way first (func_2)?

Any performance different will be so tiny that it will be very difficult to measure.

I would generally use the second version, simply because it avoids further nesting if you have additional conditions, but for a simple if/else it might be better to keep the else for clarity.

In other words: use what works for you!

Both examples are identical except for the negative or positive matching, (if true, do this, if false something else).

Your first example is the proper way to do it, using {} to surround your conditional code.

You don't want to write it as:

public function func_2() {
  if ( false == $condition ) return false;
  // Do something
    return true;
}

It will become confusing to read later on, plus it will break if you want to add internal code to the if/else.