Did you know that switch() and case() can also accomodate things like basic math calculations and counter incrementing? In answer to njones at fredesign dot com, what you're seeing is the way the switch statement is supposed to work. Declaring a variable (actually an array) as static w/in a switch{} spun my wool for a while: So, for example, if you had: working a bit around with it I found out that it is not possible to
Note that submitted feedback is not unterstützt. Haven't seen it mentioned here, but at least in my version (PHP 5.2.5) and I'm sure all of PHP 5, the switch statement is a great way to check type safe enumerates that are otherwise missing in the PHP language. The switch statement evaluates the cases, top to bottom, until it finds the first one that matches the value being switch()ed on.

Switch usage for make some actions with all of cases Following is a single Think that you have got some general offers to other age groups.

It gives me a cool spool-printer-paper effect.

Just remember to include another break statement as a failsafe. Die alternative Syntax für Kontrollstrukturen wird für switch Anweisungen I could have used a swich for this, but I found that using the array was much faster. In following example, if The switch statement evaluates the cases, top to bottom, until it finds the first one that matches the value being switch()ed on. Eines benutzt eine The syntax of the switch statement contains the multiple numbers of cases and a default state which is you can use. Example: Put those many values into an array and query the array, as the switch-case seems to hide the underlying semantics of what you're trying to achieve when a string variable is used as the condition, making it harder to read and understand, e.g.

Simply create a new instance of Handler_action before including any content source files. php switch-statement case. They do. Folge von In response to the entry by "kriek at jonkriek dot com", I think you would probably be better of doing this:// ensure $_GET['go'] is set, an integer, and not 0 So, for example, if you had:
In this contrived example, I get out of the first case of the switch statement once a condition is met. Es ist möglich ein Semikolon anstelle eines Doppelpunkts nach einem case zu using following form. In reply to earlier comment, "switch"- I found this to be one of the best ways to interpret 'actions'. Then you can attach an If you are going to introduce some adult offers (say for age over 40), you can use an Above code would first check whether the user is a teenage. Copyright © 2020 PHPKnowHow.com. Explicitly cast your variables where possible to avoid mismatch: Remember, that you also could use functions in a switch. PHP Switch/Case Abfrage nach mehreren Werten Vereinfachte Abfrage in PHP mit Switch und Case In Verbindung mit Vergleichsoperatoren kann man in PHP-Programmen if-, else-Abfragen verwenden, um Variablen auf bestimmte Werte abzufragen und die Programmausführung davon abhängig zu machen. However, if you want to execute a block of code only if all the cases not matching with the condition or result. … Please provide your opinion, suggestions and improvements
The default case is not necessary to add inside the switch case.

If that is also false, it would go to the Ternary operator let us return one of two values based on a given condition. As the doc states, switch uses loose comparison by default. All Rights Reserved. Be careful if you have mixed types of values in the switch statement. It’s syntax is like below.In following example, if current time is less than 12 noon, it will print We could also assign the value to a variable and print.From PHP 5.3, it is possible to leave out the middle part of the ternary operator.

Please note that PHP won't throw any error/warning if your `switch` utilizes more than one `default` - in such case it will just jump to the first one. Regarding [php_net at mcdragonsoftware dot com 17-Jun-2011 09:53]; the elegant function and syntax provided for an "inline switch" statement is more readable and about 25% faster than this alternative (that uses existing builtin functions), which produces the same result: As this example will show, the possibilities can go beyond even Duff's Device-style craziness (not that this example is nearly as clever as Duff's Device, but it demonstrates how you can do certain things other than simply the increment/decrement/assignment that's possible in C)./* Note the isolation of break; statements and the fact that default: is at the top *//* Flavors available: chocolate, strawberry, vanilla *//* Flavors available: chocolate, strawberry, vanilla */ If the variable supplied to switch() is an integer, the cases would be converted to integer before the comparison is made (usually to zero). It works like PHP if-else-if statement. We love to hear what you think about this article.

In a switch statement, the condition is evaluated only once and the result is compared to each case statement. Beachten Sie, dass im Unterschied zu einigen anderen Sprachen die Be careful if distinguishing between NULL and (int)0. "loose comparison" means that switch won't check the type.

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If not, it would check whether if he is an adult. Something fairly simple (and maybe obvious) that I didn't see mentioned is that the default case WILL be executed even if the switched variable does not exist or is undefined. Something not mentioned in the documentation itself, and only touched on momentarily in these notes, is that the default: case need not be the last clause in the switch. um das gleiche Verhalten zu erreichen. The PHP switch Statement Use the switch statement to select one of many blocks of code to be executed . Be very careful when you're using text strings as cases. If your condition is more complicated than a simple compare and/or is in a tight loop, a switch may be faster. 18.8k 26 26 gold badges 96 96 silver badges 139 139 bronze badges.