Top Answers

1. How long is the SHA256 hash?
   419 votes
2. Are arrays in PHP copied as value or as reference to new variables, and when passed to functions?
   316 votes
3. Among $_REQUEST, $_GET and $_POST which one is the fastest?
   290 votes
4. What is the difference between bindParam and bindValue?
   227 votes
5. How can I measure the speed of code written in PHP?
   212 votes