Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text are shown as follows: "The URL string we're working with includes a number of sSearch parameters."

A block of code is set as follows:

<?php 
  $dir='.'; // directory containing the scripts 
  $d=0; 
  foreach (new DirectoryIterator($dir) as $file) { 
    $d+=$file->getMTime(); 
  } 
?> 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

$.getJSON('./calendar.php?action=get_event&id='+calEvent.id,function(eventdata){ 
  var controls='<a href="javascript:calendar_delete_entry('+eventdata.id+');">'+'[delete]</a>';
    if(+eventdata.recurring)controls+='<br />'+'<a href="javascript:calendar_delete_recurrences('+eventdata.id+')">'+' [stop recurring]</a>';
      $('<div id="calendar_edit_entry_form"

Any command-line input or output is written as follows:

yum install php-pecl-imagick

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "When you click on this ? icon, smaller help icons will be shown next to all the elements in the page."