This article mainly introduces the simple method of implementing process control switch in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
switch allows selection of multiple possible results of a scalar (expression).
Syntax:
switch (expr) { case result1: statement1 break; case result2: statement2 break; …… default: statement }
The system calculates the value of expr and selects the corresponding execution statement below based on the calculation results (result1, result2, etc.). If If all case results are not consistent, the statement in default will be executed.
Example:
<?php switch ($x) { case 0: echo "x 等于 0"; break; case 1: echo "x 等于 1"; break; case 2: echo "x 等于 2"; break; default: echo "x 既不等于1和2,也不等于0"; } ?>
Tips
•There can be many Case condition judgment
•The result after the case is not limited to numbers, it can also be characters or other types supported by PHP
•default is not necessary
Summary: the above That’s the entire content of this article, I hope it will be helpful to everyone’s study.
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