吴裕雄--天生自然PHP-MySQL-JavaScript学习笔记：PHP数组

<?php
  $paper['copier'] = "Copier & Multipurpose";
  $paper['inkjet'] = "Inkjet Printer";
  $paper['laser']  = "Laser Printer";
  $paper['photo']  = "Photographic Paper";

  echo $paper['laser'];
?>

<?php
  $p1 = array("Copier", "Inkjet", "Laser", "Photo");

  echo "p1 element: " . $p1[2] . "<br>";

  $p2 = array('copier' => "Copier & Multipurpose",
              'inkjet' => "Inkjet Printer",
              'laser'  => "Laser Printer",
              'photo'  => "Photographic Paper");

  echo "p2 element: " . $p2['inkjet'] . "<br>";
?>

<?php
  $paper = array("Copier", "Inkjet", "Laser", "Photo");
  $j = 0;

  foreach($paper as $item)
  {
    echo "$j: $item<br>";
    ++$j;
  }
?>

<?php
  $paper = array('copier' => "Copier & Multipurpose",
                 'inkjet' => "Inkjet Printer",
                 'laser'  => "Laser Printer",
                 'photo'  => "Photographic Paper");

  foreach($paper as $item => $description)
    echo "$item: $description<br>";
?>

<?php
  $paper = array('copier' => "Copier & Multipurpose",
                 'inkjet' => "Inkjet Printer",
                 'laser'  => "Laser Printer",
                 'photo'  => "Photographic Paper");

  while (list($item, $description) = each($paper))
    echo "$item: $description<br>";
?>

<?php
  list($a, $b) = array('Alice', 'Bob');
  echo "a=$a b=$b";
?>

<?php
  $products = array(

    'paper' => array(

      'copier' => "Copier & Multipurpose",
      'inkjet' => "Inkjet Printer",
      'laser'  => "Laser Printer",
      'photo'  => "Photographic Paper"),

    'pens' => array(

      'ball'   => "Ball Point",
      'hilite' => "Highlighters",
      'marker' => "Markers"),

    'misc' => array(

      'tape'   => "Sticky Tape",
      'glue'   => "Adhesives",
      'clips'  => "Paperclips"
    )
  );

  echo "<pre>";

  foreach($products as $section => $items)
    foreach($items as $key => $value)
      echo "$section:	$key	($value)<br>";

  echo "</pre>";
?>

<?php

// This example is corrected from the one in the book,
// which had two extra blank rows in the center.

$chessboard = array(
    array('r', 'n', 'b', 'q', 'k', 'b', 'n', 'r'),
    array('p', 'p', 'p', 'p', 'p', 'p', 'p', 'p'),
    array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '),
    array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '),
    array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '),
    array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '),
    array('P', 'P', 'P', 'P', 'P', 'P', 'P', 'P'),
    array('R', 'N', 'B', 'Q', 'K', 'B', 'N', 'R')
  );

  echo "<pre>";

  foreach($chessboard as $row)
  {
    foreach ($row as $piece)
      echo "$piece ";

    echo "<br>";
  }

  echo "</pre>";
?>

<?php
  $temp = explode(' ', "This is a sentence with seven words");
  print_r($temp);
?>

<?php
  $temp = explode('***', "A***sentence***with***asterisks");
  print_r($temp);
?>

<?php
  $fname         = "Doctor";
  $sname         = "Who";
  $planet        = "Gallifrey";
  $system        = "Gridlock";
  $constellation = "Kasterborous";

  $contact = compact('fname', 'sname', 'planet', 'system', 'constellation');

  print_r($contact);
?>

<?php
  $j       = 23;
  $temp    = "Hello";
  $address = "1 Old Street";
  $age     = 61;

  print_r(compact(explode(' ', 'j temp address age')));
?>

<?php
  $paper[] = "Copier";
  $paper[] = "Inkjet";
  $paper[] = "Laser";
  $paper[] = "Photo";

  print_r($paper);
?>

<?php
  $paper[0] = "Copier";
  $paper[1] = "Inkjet";
  $paper[2] = "Laser";
  $paper[3] = "Photo";

  print_r($paper);
?>

<?php
  $paper[] = "Copier";
  $paper[] = "Inkjet";
  $paper[] = "Laser";
  $paper[] = "Photo";

  for ($j = 0 ; $j < 4 ; ++$j)
    echo "$j: $paper[$j]<br>";
?>