Array in php

 Normally There are three types of array: Indexed Array, Associative Array and Multi-Dimentional Array.

1. Indexed Array (Works with number)

<?php
$snack = array('Banana', 'Ice-cream', 'Coconet', 'Mango', 'Orange');
$snack[1]='Alcohol';
echo $snack[1];
//print_r($snack);
?>
 

 2. Associative Array (Works with name)

<?php
$snack = array('Banana' => 100, 'Apple' => 200, 'Cake' => 300);
echo 'The cake is '.$snack['Cake']. ' Kyat.';
?>


3. Multi-Dimentional Array

<?php
$food = array('Healthy'=>array('Salad'=>200, 'Milk'=>100, 'Coconet'=>200),
              'Unhealthy'=>array('Alcohol'=>200, 'Beer'=>300));

foreach($food as $element => $inner_array){
  echo '<br /><strong>'.$element.'</strong><br />';
  foreach($inner_array as $inner_element => $item){
    echo $inner_element.' = '.$item.'<br />';
  }
}
?>

Using html form in php

<?php
 if(isset($_POST["username"]) && isset($_POST["password"])){
  $username = $_POST["username"];
  $password = $_POST["password"];

  if(!empty($username) && !empty($password)){
   echo 'Welcome to TNW, '.$username.'!';
  }else{
   echo 'Fill in all fields!';
  }
 }
?>

<form action = "test.php" method = "POST">
 Username:<br />
 <input type = "text" name = "username"><br /><br />
 Password:<br />
 <input type = "password" name = "password"><br /><br />
 <input type = "submit" value = "Log In">
</form>

For each statement in php

<?php
 $food = array('Healthy'=>array('Salad', 'Milk', 'Coconet', 'Ground_nut'),

              'Unhealthy'=>array('Alcohol', 'Beer', 'Ice_cream'));

foreach($food as $element => $inner_element){
  echo '</br><strong>'.$element.'</strong></br>';

foreach($inner_element as $item){
  echo $item.'</br>';
}
}
?>