Is ther开发者_StackOverflow中文版e a way to include multiple cases inside a switch method in php?
The switch
statement works by evaluating each case
expression in turn and comparing the result to the switch
expression. If the two expressions are equivalent, the case block is executed (within the constraints established by break
/continue
constructs). You can use this fact to include arbitrary boolean expressions as case
expressions. For example:
<?php
$i = 3;
$k = 'hello world';
switch (true) {
case 3 == $i and $k == 'hi there';
echo "first case is true\n";
break;
case 3 == $i and $k == 'hello world';
echo "second case is true\n";
break;
} //switch
?>
This outputs:
second case is true
I don't use this sort of construction very often (instead preferring to avoid such complex logic), but it sometimes comes up where a complicated if-then
statement might otherwise be used, and can make such snippets much easier to read.
What's wrong with simply nesting switches?
$i = 1;
$j = 10;
switch($i) {
case 2:
echo "The value is 2";
break;
case 1:
switch($j) {
case 10:
echo "Exception Case";
break;
default:
echo "The value is 1";
break;
}
break;
default:
echo "Invalid";
break;
}
Yes it is possible
Here is an example to start with
<?
$i = 1;
$j = 10;
switch($i) {
case "2":
echo "The value is 2";
break;
case ($i==1 && $j==10):
echo "Your exceptional Switch case is triggered";
break;
default:
echo "Invalid";
break;
}
?>
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