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lecture2 - CPSC431Databases&Applications Lecture2 PHPBasics...

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PHP Basics PHP Basics CPSC 431 Databases & Applications Lecture 2
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Escaping to PHP Escaping to PHP <h3>Welcome!</h3> <?php  print "<p>This is a PHP example.</p>"; ?> <p>Some static information found here...</p>  or <script language="php">  print "This is another PHP example."; </script> 
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Embedding Multiple Code Blocks Embedding Multiple Code Blocks <html> <head> <title> <?php  echo "Welcome to my site!"; ?> </title> </head> <body> <?php $date = "May 18, 2003"; ?> <h3>Today's date is <?php =$date;?></h3> </body> </html> 
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Single Line Comments Single Line Comments <?php  // Title: My PHP program   // Author: Jason  print "This is a PHP program";  ?> Or <?php  # Title: My PHP program   # Author: Jason  print "This is a PHP program";  ?> 
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Multiple-line Comments Multiple-line Comments <?php  /* Title: My PHP Program    Author: Jason      Date: October 10, 2005 */  ?> 
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print() print() <?php  print("<p>I love the summertime.</p>"); ?> <?php  $season = "summertime";  print "<p>I love the $season.</p>";  ?> <?php  print "<p>I love the  summertime.</p>"; ?> <?php  $season = "summertime";  print "<p>I love the ".$season."</p>"; ?> 
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echo() echo() <?php  $heavyweight = "Lennox Lewis";  $lightweight = "Floyd Mayweather";  echo $heavyweight, " and ", $lightweight, " are great  fighters."; ?>  This code produces the following: Lennox Lewis and Floyd Mayweather are great  fighters. 
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printf() printf() printf("$%01.2f", 43.2); // $43.20 printf("%d beer %s", 100, "bottles");  // 100 beer bottles Printf("%15s", "Some text");  // Some text %c  single character %d  integer %f  floating point number %s  character string %u  unsigned integer
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Scalar Datatypes Scalar Datatypes Boolean $alive = false;       # $alive is false. $alive = 1;           # $alive is true. $alive = -1;          # $alive is true. $alive = 5;           # $alive is true. $alive = 0;           # $alive is false.
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Scalar Datatypes Scalar Datatypes Integer 42              # decimal -678900      # decimal 0755         # octal 0xC4E        # hexadecimal The maximum supported integer size is platform-dependent, although  this is typically positive or negative 2 31 . If you attempt to surpass 
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