The last sentence of this quoted passage is the line of interest in your case. The switch statement is used to perform different actions that based on different conditions. the empty string, and the string '0' an array with zero elements an object with zero member variables (PHP 4 only) the special type NULL (including unset variables SimpleXML objects created from empty tags Every other value is considered TRUE (including any resource). The intention of this shopping cart software is that it should be simple and as minimal as possible. In this tutorial, let’s create a simple PHP shopping cart software with MySQL. It seems as though a PHP switch statement sees NULL as a joker, and applies any case to it. Building a PHP shopping cart eCommerce software is simple and easy. ![]() The report looks fine (except that one column): all of the other elements of the report - including some generated by other switch statements ( none of which have NULL as a possible value) - look as designed.PHP switch case statement was first introduced in PHP 5. From what Ive tested, the top answer is inaccurate. Let's begin with a simple example that shows a direct comparison between using if-else and switch-case to control program flow. Magic method definitions and calls must be using the correct casing. In this tutorial, I will show you how to use switch-case in PHP to compare a variable with many different values. PHP's switch doesn't just allow you to switch on the value of a particular variable: you can use any expression as one of the cases, as long as it gives a value for the case to use. Here, case D match but there is only code to echo number and there is no number assign for D in array, so t shows nothing. The default statement is used if no match is found. Try This: It will give the answer :LETTER D is empty (Default only execute only when no condition is satisfied, if you want to output 'letter D is empty' then you have to wrie code inside the letter match case. ![]() Magic constants should be referred to using the correct casing. Use break to prevent the code from running into the next case automatically. ![]() ![]() Passing null and false (boolean) as the variable still gets into the 0 case. Initially, I didn't enclose my case in quotes. There is a while loop that spins out the report based on what happens in the while loop. Class static references self, static and parent MUST be in lower case. Naturally you would have expected it to be picked by the default case. AbraCadaver's answer solved my problem, but I thought I'd share the issue and solution in case it's of use to someone else.
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