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May 18, 2007
Smart English Output - via PHP and Perl ? : operator
It's smart to have your program say "there IS in stock" or "there ARE 2 in stock" ... but if you write your code using an "if" and "else" type structure it can become quite verbose.
The ? ... : operator - available in many languages including C, Perl and PHP - allows you to write a single "if,else" line in a much shorter form:
{condition} ? {value if true} : {value if false}
Here's an subtle example of this operator in use - an image from our pricing for a two day public course:
where you'll note "room" and "rooms". The code, where $ns is a variable containing the number of students:
$rlet = ($ns==1) ? "":"s";
$pricing[$ns] .= "<b>With hotel room$rlet<b><br>";
Posted by gje at May 18, 2007 08:25 AM