lect02-separate-test-files
separate php files
code, testing, html-generating

Last time, we talked about writing test cases and code for a function blend. Today we'll show more ways of running php, and how to properly separate files.

Accessing `rucs`

Before we even revisit the code, let's talk about rucs:

How to run a php file: Either php -a for a quick interactive session; or from the command-line, php filename.
How to log on to rucs, so you can run it: First, start the VPN, if you are off campus. Then, either use ssh yourUserName@rucs.radford.edu or run putty. Note that if rucs is down, then ruacad.radford.edu can also be used.
Be aware: rucs and ruacad are not the campus web server, nor the php server! You don't have accounts on those machines (although your H: drive is shared by those machines).
How to edit files on rucs: Either log in to rucs and edit locally (vim, emacs, or pico); or from your PC, mount your H: drive and then edit locally (using Notepad or JEdit or eclipse... but not Word).

Separating files

We left our program as follows:

 1  <?php
 2      /** Return a blend of two words:
 3       * @param $word1 The word to take the first half from.
 4       * @param $word2 The word to take the second half from.
 5       * @return the first half of $word1 concatenated to the second half of $word2.
 6       *   (If a word is odd length, we round the halfway-point down.)
 7       */
 8  function blend( $str1, $str2 ) {
 9    $mid1 = strlen($str1)/2;
10    $mid2 = strlen($str2)/2;
11    $firstHalf = substr($str1, 0, $mid1 );
12    $secondHalf = substr($str2, $mid2 );
13    return $firstHalf . $secondHalf;
14    }
15  
16  
17  
18  
19  
20  
21  /*
22      function blend( $word1, $word2 ) {
23        $fHalf = substr($word1, 0, strlen($word1)/2 );
24        $lHalf = substr( $word2, strlen($word2)/2 );
25        return $fHalf . $lHalf;
26      }
27      
28  */
29      
30      // Run our tests:
31      echo "\nexpect: " . "motel";
32      echo "\nactual: " . blend("motor", "hotel");
33      
34      echo "\nexpect: " . "smog";
35      echo "\nactual: " . blend("smoke", "fog");
36      
37      echo "\nexpect: " . "Iland";
38      echo "\nactual: " . blend("Ian", "Barland");
39      
40      echo "\nexpect: " . "";
41      echo "\nactual: " . blend("a", "");
42      
43      echo "\nexpect: " . "a";
44      echo "\nactual: " . blend("", "a");
45      
46      echo "\nexpect: " . "bc";
47      echo "\nactual: " . blend("", "abc");
48      
49      echo "\nexpect: " . "a";
50      echo "\nactual: " . blend("abc", "");
51      
52      echo "\nexpect: " . "";
53      echo "\nactual: " . blend("", "");
54      
55      echo "\nexpect: " . "1";
56      echo "\nactual: " . blend("a", "1");
57      
58      echo "\nexpect: " . "a2";
59      echo "\nactual: " . blend("ab", "12");
60      
61      
62      
63      echo "\n";
64      echo "    Hi Ian Barland -- I shall call you ", blend("Ian","Barland"), "\n";
65      echo "    (How do you like that?)\n";
66      ?>

We can use require-once to separate these better: one file for library functions (“blend.php”); one for test cases (“blend-test.php”); an end "app" file that actually does/print what we want (“lect02-page-printer.php”):

blend.php:

 1  <?php
 2  
 3  /** Return a blend of two words:
 4   * @param $word1 The word to take the first half from.
 5   * @param $word2 The word to take the second half from.
 6   * @return the first half of $word1 concatenated to the second half of $word2.
 7   *   (If a word is odd length, we round the halfway-point down.)
 8   */
 9  function blend( $word1, $word2 ) {
10    $mid1 = strlen($word1)/2;
11    $mid2 = strlen($word2)/2;
12    $firstHalf = substr($word1, 0, $mid1 );
13    $secondHalf = substr($word2, $mid2 );
14    return $firstHalf . $secondHalf;
15    }
16  
17  
18  /*  We could equally well write use two fewer variables:
19  
20      function blend( $word1, $word2 ) {
21        $fHalf = substr($word1, 0, strlen($word1)/2);
22        $lHalf = substr($word2, strlen($word2)/2);
23        return $fHalf . $lHalf;
24      }
25      
26     Or even two fewer variables:
27  
28      function blend( $word1, $word2 ) {
29        return substr($word1, 0, strlen($word1)/2) . substr($word2, strlen($word2)/2);
30        }
31  */
32  
33    ?>

blend-test.php:

 1  <?php
 2      
 3      require_once( 'blend.php' );
 4  
 5  
 6      // Run our tests:
 7      echo "\nexpect: ", "motel";
 8      echo "\nactual: ", blend("motor", "hotel");
 9      
10      echo "\nexpect: ", "smog";
11      echo "\nactual: ", blend("smoke", "fog");
12      
13      echo "\nexpect: ", "Iland";
14      echo "\nactual: ", blend("Ian", "Barland");
15      
16      echo "\nexpect: ", "";
17      echo "\nactual: ", blend("a", "");
18      
19      echo "\nexpect: ", "a";
20      echo "\nactual: ", blend("", "a");
21      
22      echo "\nexpect: ", "bc";
23      echo "\nactual: ", blend("", "abc");
24      
25      echo "\nexpect: ", "a";
26      echo "\nactual: ", blend("abc", "");
27      
28      echo "\nexpect: ", "";
29      echo "\nactual: ", blend("", "");
30      
31      echo "\nexpect: ", "1";
32      echo "\nactual: ", blend("a", "1");
33      
34      echo "\nexpect: ", "a2";
35      echo "\nactual: ", blend("ab", "12");
36      ?>

lect02-page-printer.php:

 1  <?php
 2  require_once('blend.php'); 
 3  
 4  echo "<html>\n";
 5  echo "  <head>\n";
 6  echo "    <title>Name Blender</title>\n";
 7  echo "  </head>\n";
 8  echo "";
 9  echo "  <body>\n";
10  echo "    <p>\n";
11  echo "      Hi Ian Barland -- I shall call you ", blend("Ian","Barland"), "\n";
12  echo "      (How do you like that?)\n";
13  echo "    </p>\n";
14  echo "  </body>\n";
15  echo "</html>\n";
16  ?>

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©2013, Ian Barland, Radford University
Last modified 2014.Jan.24 (Fri) Please mail any suggestions
(incl. typos, broken links)
to ibarlandradford.edu

lect02-separate-test-files separate php filescode, testing, html-generating

Accessing rucs

Separating files

lect02-separate-test-files
separate php files
code, testing, html-generating

Accessing `rucs`