Multiple replace (probably preg_replace) of same string with array

Question

I need to replace multiple instances of a certain string (question mark) with strings from an array. e.g. if the string I wish to replace appears 3 times and my array has a

Answer 1

why not use

$retString = vsprintf('banana is %s, apple is %s, tomato is %s', $myArray);  
return $retString;