How Much Expensive IF ELSE Statement is in PHP

Question

According to my pagination scheme, I have about 20 comments on each PHP page. I have use an If else statement on each comment to check whether the user logged in or not. So, there are about 20 IF ELSE Statements.

I don't know how much time and processing an IF ELSE statement takes. How much expensive an IF ELSE Statement could be. If I have used 20 IF ELSE statements of like this

IF ($user_logged_in) {
     // do this
} ELSE {
    // do this
}

Note: $user_logged_in is not a function, it is boolean variable that is set on the start of the page.

So, How much time consuming it could be for my webpage in this scenario??

Don't worry about it. PHP is built to do exactly those things you describe. Use it and don't worry about speed. — Till Helge, Mar 04 '13 at 12:03
the execution time of the *if/else* as such doesnt matter. What matters is the code you do inside the if and else *block*. You are not showing what you are doing inside, so no one can tell. And even if you would, the answer is: profile it. — Gordon, Mar 04 '13 at 12:13
completelly valid question bashed, he should care simply because its interesting... — Jonathan DS, Dec 19 '13 at 17:16

score 7 · Answer 1 · answered Mar 04 '13 at 12:03

You should not really care about the performance of if statements. Care about really expensive stuff such as database calls, file opening, directory managements, XML reading, etc.

Language constructs are way faster than you could ever think. Therefore that's not the problem if your page loads too slowly.

How Much Expensive IF ELSE Statement is in PHP

1 Answers1