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third PHP revision example - functions
PHP Revision example from a Well House Consultants training course
More on PHP Revision [link]
Source code: three.php Module: H300
This is a third PHP Revision example - functions
<?php /* Functions - named blocks of code - passing parameters in by position, optional and by name - variables default to being local to function - variables can be declared as global or static - Also note superglobal variables such as $_POST */ function getbmi($h, $w = 70) { global $ncalls; $b = sprintf("%.2f",$w / $h / $h); $ncalls ++; return $b; } $ncalls = 0; $height = 1.76; $weight = 75; $b = getbmi($height, $weight); print "Your BMI is $b\n"; $b = getbmi($height); print "Your BMI at average weight would be $b\n"; print "Number of calls - $ncalls\n"; date_default_timezone_set("Europe/London"); ?> Copyright, Well House Consultants, <?php print(date("Y")); ?> <?php /* Sample Output wizard:examples graham$ php three.php This is a third PHP Revision example - functions Your BMI is 24.21 Your BMI at average weight would be 22.60 Number of calls - 2 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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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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