PHP: Looping Thru Array

Loop Thru Values

<?php
$aa = array(1,2,3);
foreach ($aa as $x) {
  echo "$x ";
}
# 1 2 3
?>

Loop Thru Keys and Values

<?php
$aa = array("one","two","three");
foreach ($aa as $k => $v) {
  echo "$k,$v; ";
}

# 0,one; 1,two; 2,three;
?>

Map Thru Values

Map a function to a array.

<?php
function ff($n) {return($n+1);}

$a = array(3,9,4);
$b = array_map('ff', $a);
print_r($b);

/*
Array ( [0] => 4 [1] => 10 [2] => 5 )
*/
?>