for loop vs while loop vs foreach loop PHP

Question

1st off I\'m new to PHP. I have been using for loop,while loop,foreach loop in scripts. I wonder

• which one is better for performance?
• what\'s the cri

Answer 1

• for loop is more appropriate when you know in advance how many iterations to perform
• While loop is used in the opposite case(when you don't know how many iterations are needed)
• For-Each loop is best when you have to iterate over collections.

To the best of my knowledge, there is little to no performance difference between while loop and for loop i don't know about the for-each loop