php foreac

1foreach (array as $value){ 
2  //code to be executed; 
3  print("value : $value");
4} 
5
6foreach (array as  $key => $value){ 
7  //code to be executed; 
8  print("key[$key] => $value");
9} 

1<?php
2$arr = array(1, 2, 3, 4);
3foreach ($arr as &$value) {
4    $value = $value * 2;
5}
6// $arr is now array(2, 4, 6, 8)
7unset($value); // break the reference with the last element
8?>

1
2<?php
3foreach (array(1, 2, 3, 4) as &$value) {
4    $value = $value * 2;
5}
6?>
7
8

1
2<?php
3$array = [
4    [1, 2],
5    [3, 4],
6];
7
8foreach ($array as list($a, $b)) {
9    // $a contains the first element of the nested array,
10    // and $b contains the second element.
11    echo "A: $a; B: $b\n";
12}
13?>
14
15