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eg-259:lecture16 [2012/03/13 19:38] – [Hello World (PHP)] eechriseg-259:lecture16 [2013/03/06 19:22] – [Introduction to PHP (Part 1)] eechris
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 ====== Introduction to PHP (Part 1) ====== ====== Introduction to PHP (Part 1) ======
  
-**Contact Hour 19**: To be discussed on Tuesday 20th March, 2012.+**Contact Hour 21**: To be discussed on Tuesday 19th March, 2013.
  
 **Lecturer**: [[C.P.Jobling@Swansea.ac.uk|Dr Chris P. Jobling]]. **Lecturer**: [[C.P.Jobling@Swansea.ac.uk|Dr Chris P. Jobling]].
Line 288: Line 288:
  
 <code php> <code php>
-<?php echo("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"); ?>  +<!DOCTYPE html>
-<!DOCTYPE html PUBLIC "-//w3c//DTD HTML 1.1 //EN" +
- "http://www.w3.org/TR/HTML11/DTD/HTML11.dtd">+
  
 <!-- today.php - A simple example to illustrate a PHP document --> <!-- today.php - A simple example to illustrate a PHP document -->
-<html xmlns = "http://www.w3.org/1999/HTML" xml:lang="en"> +<html lang="en"> 
-  <head> <title> today.php </title>+  <head>  
 +    <meta charset="utf-8" /> 
 +    <title> today.php &ndash; A simple example to illustrate a PHP document  </title>
   </head>   </head>
   <body>   <body>
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     </p>     </p>
   </body>   </body>
-</html> +</html>
 </code> </code>
  
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 {{eg-259:l16-today.png|Result of executing PHP script today.php}} {{eg-259:l16-today.png|Result of executing PHP script today.php}}
  
-<note warning> 
-The first line of the code 
-<code php> 
-<?php echo("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"); ?>  
-</code> 
-Is necessary to protect the XML declaration (needed for valid HTML) 
-<code html> 
-<?xml version="1.0" encoding="utf-8"?> 
-</code> 
-from the PHP parser. The code simply asks PHP to //echo// the declaration rather than ecoding it directly in the HTML part of the script. If you do not do this you get this mysterious error message! 
- 
-**Parse error**: syntax error, unexpected T_STRING in **C:\xampp\htdocs\eg-259\examples\lecture16\today.php** on line 1 
-</note> 
    
  
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   * Code:   * Code:
 <code php> <code php>
-<?php echo("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"); ?>  +<!DOCTYPE html>
-<!DOCTYPE html PUBLIC "-//w3c//DTD HTML 1.1 //EN" +
- "http://www.w3.org/TR/HTML11/DTD/HTML11.dtd">+
  
 <!-- powers.php <!-- powers.php
      An example to illustrate loops and arithmetic      An example to illustrate loops and arithmetic
      -->      -->
-<html xmlns = "http://www.w3.org/1999/HTML" xml:lang="en"> +<html lang="en"> 
-  <head> <title> powers.php </title>+  <head>  
 +    <meta charset="utf-8"> 
 +    <title> powers.php &ndash An example to illustrate loops and arithmetic </title>
   </head>   </head>
   <body>   <body>
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     </table>     </table>
   </body>   </body>
-</html> +</html> 
 </code> </code>
  
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 ---- ----
  
-<note>+<note warning>
 this is not necessarily a good idea! Notice how the end brace for the conditional is separated from the loop body by several unrelated HTML tags. This produces fragile code -- if the second set of PHP tags where removed, a syntax error would occur which might be difficult to track down. this is not necessarily a good idea! Notice how the end brace for the conditional is separated from the loop body by several unrelated HTML tags. This produces fragile code -- if the second set of PHP tags where removed, a syntax error would occur which might be difficult to track down.
-</code>+</note>
  
  
eg-259/lecture16.txt · Last modified: 2013/03/08 18:03 by eechris