How can I make this code simpler?

Question

if(condition 1){
 var=changeVar(var);
 changed=true;
}

if(condition 2){
 var=changeVar2(var);
 changed=true;
}

if(condition 3){
 var=changeVar3(var);
 changed=true;
}

I don't like how changed=true; is repeated three times.

Answer 1

You could save the old var, and compare it?

oldVar = var;

//your code here.

changed = (oldVar != var);

I had == in there at first, but wouldn't that give a wrong (or at least different) sollution then in the question?

Answer 2

<?php
if (condition 1) {
    var=changeVar(var);
}
if (condition 2) {
    var=changeVar2(var);
}
if (condition 3) {
    var=changeVar3(var);
}
changed=(condition 1||condition 2||condition 3||changed); // set changed value only if condition 1, condition 2 or condition 3 is true, keep old value otherwise
?>