So, use break at the end of your case block to break out of the switch statement unless you want the following cases to be executed. If we didn’t use break, PHP would continue to execute the other conditions in the switch statement. Finally, we come to the break, which signals the end of the if like statement. After that colon, we have our statements to be executed. Instead, the case is followed by the conditional variable. However, we can see that we do not have to repeat that boring comparison operator over and over. The entire switch is implicitly using the = that we saw in the if statements earlier. The syntax is slightly different than an if statement. Example $x = 3 Ĭase 1: //this statement is the same as if($x = 1)Ĭase 2: //this statement is the same as if($x = 2)Ĭase 3: //this statement is the same as if($x = 3)Ĭase 4: //this statement is the same as if($x = 4)ĭefault: //this statement is the same as if $x does not equal the other conditions The simple syntax of switch statements provide more readable code as opposed to using a lot of else if statements. If statements check one conditional, but switch statements can check for many different cases. As you use them, you will begin to realize why they are much more convenient that writing a whole lot of if statements or elseif statements. We have already shared a program in the above section on this logic only refer to that for a better understanding of a use case.The PHP switch statement is pretty much a simplified way to write multiple if statements for one variable. Consider why there is no break in the default statement the above description carries the answer although.Ĭode to be executed if testvalue = label1 Ĭode to be executed if testvalue = label2 Ĭode to be executed if testvalue = label3 Ĭode to be executed if testvalue is different from above.This could be done after data analysis in the system you are deploying. This order of placement matters a lot while you write code, and you should be well aware of the kind of input data that you will be getting mostly as a test condition its better to keep that case at the top so that maximum users get the result as early possible with first line only.Hence it’s logical to place the default statement at the end of the file.For example, if the age is 24, the output will be ‘others’. The default statement executes only if none of the abovementioned conditions are met.You must see that there is a ‘break’ statement in every case statement block, too the task of ‘break’ is to take the flow out of the switch context and proceed with the next logical instruction in the program file. Will the control flow default also? As it seems something like a condition that will get executed by default.Once it evaluates its test value, the system executes the ‘echo ‘child” statement and proceeds to the next step.If the condition is not met, the control proceeds to the following statement, evaluate the following expression and continues searching until it finds the relevant expression. Given the input of the age variable, the system evaluates the case expression values against the test value and checks the first case. Now let’s examine the processing order and the elapsed time in the control traversal.As in the above case, the age variable shows that the age range mentioned matches’ 7-12′, so we will get ‘child’ in the output.The Switch takes a common criterion parameter as input, which will take a set of values upon which we must apply the conditional evaluation for business logic implementation.So you may have got a rough idea after seeing the example displayed above the example carries the implementation of such a condition using just one ‘switch’ statement rather than putting ourselves into multiple if and else statements.Let’s see a PHP snippet where we have a range of age, and a corresponding message is displayed to represent those people’s categories. Web development, programming languages, Software testing & others Detailed Description of PHP Switch Statement Start Your Free Software Development Course
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