Detailed explanation of php switch method examples in PHP

php switch

A switch statement is like a series of if statements with the same expression. There are many situations where you need to compare the same variable (or expression) with many different values ​​and execute different code depending on which value it equals.

Example

<?php
switch (n)
{
case label1:
    如果 n=label1，此处代码将执行;
    break;
case label2:
    如果 n=label2，此处代码将执行;
    break;
default:
    如果 n 既不等于 label1 也不等于 label2，此处代码将执行;
}
 
//类似于下面示例
if ($i == 0) {
    echo "i equals 0";
} elseif ($i == 1) {
    echo "i equals 1";
} elseif ($i == 2) {
    echo "i equals 2";
}
?>

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