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first PHP revision example
PHP Revision example from a Well House Consultants training course
More on PHP Revision [link]
Source code: one.php Module: H300
This is a first PHP Revision example
<?php /* Shows far too many different features in one short piece of code for its own good but - never mind - it's illustrative! */ /* - PHP is an open source general-purpose server-side scripting language originally designed for Web development to produce dynamic Web pages. - It can also be run in other environments such as standalone though originator Rasmus Lerdorf says the priority on features is for web use. - PHP originally stood for "Personal Home Pages" and ran on "A Patchy Server", but who's going to commit his business to products with such names? - PHP is now the PHP Hypertext Protocol, usually running under the Apache httpd server. * Key attributes: - operator and operand based language - ; separate statements and { to } blocks of code (like C) - dynamic variable typing and memory allocation (unlike C) - variable names start with a sigil (a $ character) to say "this is a variable" - Comments start with # or // to end of line, or /* to *_/ - Code runs within <?php to ?> tags - outside that, code is echoed to output - classic while, if and for statements, assignments, tests, etc */ $people = 11; $share = 10000.0; # "Classic" basic coding $k = 1; while ($k <= $people) { $each = $share / $k; print ("With $k people, each would get $each\n"); $k = $k + 1; } # With considerable improvement! $result = "\n"; for ($k=1; $k<= $people; $k++) { $each = $share / $k; if ($k == 1) { $theyword = "he/she"; } else { $theyword = "each"; } $pword = ($k != 1) ? "people" : "person"; $result .= sprintf("With %-2d $pword, %6s would get %08.2f\n",$k,$theyword,$each); } print $result; // and as webcontent! $html = "\n<table>\n"; $html .= "<tr><th>people</th><th>each gets</th></tr>\n"; foreach (range(1,$people) as $k) { $html .= "<tr>"; $html .= "<td>$k</td>"; $each = $share / $k; $html .= "<td>".sprintf("%.2f",$each)."</td>"; $html .= "</tr>\n"; } $html .= "</table>\n"; print $html; date_default_timezone_set("Europe/London"); ?> Copyright, Well House Consultants, <?php print(date("Y")); ?> <?php /* Sample output wizard:examples graham$ php one.php This is a first PHP Revision example With 1 people, each would get 10000 With 2 people, each would get 5000 With 3 people, each would get 3333.3333333333 With 4 people, each would get 2500 With 5 people, each would get 2000 With 6 people, each would get 1666.6666666667 With 7 people, each would get 1428.5714285714 With 8 people, each would get 1250 With 9 people, each would get 1111.1111111111 With 10 people, each would get 1000 With 11 people, each would get 909.09090909091 With 1 person, he/she would get 10000.00 With 2 people, each would get 05000.00 With 3 people, each would get 03333.33 With 4 people, each would get 02500.00 With 5 people, each would get 02000.00 With 6 people, each would get 01666.67 With 7 people, each would get 01428.57 With 8 people, each would get 01250.00 With 9 people, each would get 01111.11 With 10 people, each would get 01000.00 With 11 people, each would get 00909.09 <table> <tr><th>people</th><th>each gets</th></tr> <tr><td>1</td><td>10000.00</td></tr> <tr><td>2</td><td>5000.00</td></tr> <tr><td>3</td><td>3333.33</td></tr> <tr><td>4</td><td>2500.00</td></tr> <tr><td>5</td><td>2000.00</td></tr> <tr><td>6</td><td>1666.67</td></tr> <tr><td>7</td><td>1428.57</td></tr> <tr><td>8</td><td>1250.00</td></tr> <tr><td>9</td><td>1111.11</td></tr> <tr><td>10</td><td>1000.00</td></tr> <tr><td>11</td><td>909.09</td></tr> </table> Copyright, Well House Consultants, 2012 wizard:examples graham$ */ ?> Learn about this subject
This module and example are covered on the following public courses:
* PHP Techniques * Intermediate PHP - weekend course / hobby / club / leisure users Also available on on site courses for larger groups Books covering this topic
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Other Examples
This example comes from our "PHP Revision" training module. You'll find a description of the topic and some
other closely related examples on the "PHP Revision" module index page.
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