![]() The switch statement should be used to handle simple expressions, avoid using complex expressions in the switch statement. Use the switch statement with variables that can have a limited number of values, like days of the week or months of the year. Make sure that the switch statement is covering all possible cases and not leaving any gaps in the execution. If you have multiple cases that should execute the same code, use fall-through instead of duplicating the code. Use the strict comparison in the switch statement, meaning that the data type of the expression and the case value must be the same. Use the switch statement only when the number of cases is relatively small and it makes the code more readable.Īvoid using large blocks of code in each case statement, instead use functions to keep the code organized and maintainable.Īlways use the break statement to break out of the switch statement after a case has been executed.Īlways include a default case, even if it is empty, to handle unexpected values. Use meaningful case labels to improve code readability and make it easier to understand the intended behavior. I've wanted something like this for years, and never thought to actually see if it was possible, this is the best way I've ever seen to avoid endless loops or if/elseif structures. If you're looking for a great answer, ignore the accepted one. In this example, the code block associated with case "Monday", "Tuesday", "Wednesday", "Thursday" and "Friday" will be executed and the output will be "Today is a weekday." Best Practices This is a great solution, by far the best I've seen anywhere. The basic syntax of the switch statement is as follows: switch ( expression ) Then, your switch will try to find a case which equals to 0. ![]() In your question switch (v) is same as if you'd written: switch (0), because v 0. If no case is matched, the code block associated with the default case (if present) will be executed. PHP continues to execute the statements until the end of the switch block, or the first time it sees a break statement. If the two expressions are equivalent, the case block is executed (within the constraints established by break / continue constructs). It is used to test a variable or expression against multiple cases, and execute the code block associated with the first matching case. The switch statement works by evaluating each case expression in turn and comparing the result to the switch expression. The PHP switch statement is used to perform different actions based on different conditions.
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