Php foreach loop

foreach loop an easy way to iterate over arrays.It is used only on arrays and objects to iterate the value.

Syntax:- this syntax represent only each iteration value.


foreach (iterable_expression as $value)
 statement

Example:-
Suppose, You have game_arr variable which has 4 game and now iterate the game through foreach loop.


<?php
$game_arr=array('Hockey','Cricket','Tennis','Football');
foreach($game_arr as $game_name){

	echo $game_name.'<br/>';
}
?>

Hockey
Cricket
Tennis
Football

Try it Yourself

Syntax:- this syntax represent current element’s key to the $key variable on each iteration.


foreach (iterable_expression as $key => $value)
    statement

Example:-
Suppose, You have game_arr variable which has 4 game and now iterate the game through foreach loop.


<?php
$game=array('Hockey','Cricket','Tennis','Football');
foreach($game as $key => $game_name){

	echo $game_name.' is on array position '.$key.'<br/>';;
}
?>

Hockey is on array position 0
Cricket is on array position 1
Tennis is on array position 2
Football is on array position 3

Try it Yourself

Php foreach loop – Interview Questions

Q 1: What is foreach loop?

Ans: Used to iterate over arrays.

Q 2: Syntax of foreach?

Ans: foreach ($arr as $value) { }

Q 3: Can foreach access keys?

Ans: Yes.

Q 4: Is foreach faster than for loop?

Ans: Yes, for arrays.

Q 5: Can foreach modify array values?

Ans: Yes, using references.