Loops

<?php

foreach ($users as $user) {
  echo $user['name'] . ' [' . $user['address'] . '] (' . $user['age'] . ')';
}

for ($i = 0; $i < count($users); $i = $i + 1) {
  echo $users[$i]['name'] . ' [' . $users[$i]['address'] . '] (' . $users[$i]['age'] . ')';
}

$i = 0;
while ($i < count($users)) {
  echo $users[$i]['name'] . ' [' . $users[$i]['address'] . '] (' . $users[$i]['age'] . ')';
  $i = $i + 1;
}

// The last two could be rewritten for clarity like so.

for ($i = 0; $i < count($users); $i = $i + 1) {
  $user = $users[$i]; // store the current user in the $user variable.
  echo $user['name'] . ' [' . $user['address'] . '] (' . $user['age'] . ')';
}

$i = 0;
while ($i < count($users)) {
  $user = $users[$i]; // store the current user in the $user variable.
  echo $user['name'] . ' [' . $user['address'] . '] (' . $user['age'] . ')';
  $i = $i + 1;
}