Hello everyone, what is the best way to loop throghout an array and changing each item? code example

Example 1: iterate through array javascript

var myStringArray = ["Hello","World"];
var arrayLength = myStringArray.length;
for (var i = 0; i < arrayLength; i++) {
    console.log(myStringArray[i]);
    //Do something
}

Example 2: iterate through array javascript

foreach ($objects as $obj) {
   echo $obj->property;
}