PHP switch case more than one value in the case
PhpSwitch StatementCasePhp Problem Overview
I have a variable that holds the values 'Weekly', 'Monthly', 'Quarterly', and 'Annual', and I have another variable that holds the values from 1 to 10.
switch ($var2) {
case 1:
$var3 = 'Weekly';
break;
case 2:
$var3 = 'Weekly';
break;
case 3:
$var3 = 'Monthly';
break;
case 4:
$var3 = 'Quarterly';
break;
case 5:
$var3 = 'Quarterly';
break;
// etc.
}
It isn't beautiful, because my code has a lot of duplicates. What I want:
switch ($var2) {
case 1, 2:
$var3 = 'Weekly';
break;
case 3:
$var3 = 'Monthly';
break;
case 4, 5:
$var3 = 'Quarterly';
break;
}
How can I do it in PHP?
Php Solutions
Solution 1 - Php
The simplest and probably the best way performance-wise would be:
switch ($var2) {
case 1:
case 2:
$var3 = 'Weekly';
break;
case 3:
$var3 = 'Monthly';
break;
case 4:
case 5:
$var3 = 'Quarterly';
break;
}
Also, possible for more complex situations:
switch ($var2) {
case ($var2 == 1 || $var2 == 2):
$var3 = 'Weekly';
break;
case 3:
$var3 = 'Monthly';
break;
case ($var2 == 4 || $var2 == 5):
$var3 = 'Quarterly';
break;
}
In this scenario, $var2 must be set and can not be null or 0
Solution 2 - Php
switch ($var2) {
case 1 :
case 2 :
$var3 = 'Weekly';
break;
case 3 :
$var3 = 'Monthly';
break;
case 4 :
case 5 :
$var3 = 'Quarterly';
break;
}
Everything after the first matching case will be executed until a break statement is found. So it just falls through to the next case, which allows you to "group" cases.
Solution 3 - Php
If You're reading this and the year is 2021 and beyond, You're also using PHP > 8.0, you can now use the new match expression for this.
this could be
$var3 = match($var2){
1, 2 => 'Weekly',
3 => 'Monthly',
4, 5 => 'Quarterly',
default => 'Annually',
};
Please note that match does identity checks, this is the same as === compared to switch equality check which is ==.
read more about match expression here
Solution 4 - Php
Switch is also very handy for A/B testing. Here is the code for randomly testing four different versions of something:
$abctest = mt_rand(1, 1000);
switch ($abctest) {
case ($abctest < 250):
echo "A code here";
break;
case ($abctest < 500):
echo "B code here";
break;
case ($abctest < 750):
echo "C code here";
break;
default:
echo "D code here";
break;
Solution 5 - Php
You could use array to store you match groups; like:
<?php
$names = array('Ian', 'Jack', 'Fred', 'Ismail');
$name = 'Vladimir';
switch ($name) {
case (in_array($name, $names)):
echo '<p> Welcome ' . $name . '</p>';
break;
default:
echo '<p>' . $name . ' is a stranger to me?</p>';
}
?>
Solution 6 - Php
function bankRemark()
{
$this->db->select('id,status,funding_dt,date,remarks1');
$this->db->from($this->db_sdip);
$this->db->where("amc_remark != '' ");
$query = $this->db->get();
// echo $this->db->last_query();die;
if($query->num_rows() > 0)
{
$data = $query->result();
foreach($data as $val)
{
$id = $val->id;
$status = strtoupper($val->status);
$funding_dt = $val->funding_dt;
$date = $val->date;
$remarks1 = $val->remarks1;
switch ($favcolor) {
case "REFUND":
case "STALE":
if(date("d-m-Y",strtotime($funding_dt)) >= date("d-m-Y",strtotime('31-01-2007')))
{
$this->db->where('id', $id);
$this->db->update($this->db_sdip, array(
'remarks1 ' => 'Rejected',
'amc_remark' => 'Check in FD'
));
}
if( (date("d-m-Y",strtotime($funding_dt)) >= date("d-m-Y",strtotime('01-05-2003'))) and (date("d-m-Y",strtotime($funding_dt)) <= date("d-m-Y",strtotime('31-01-2007'))))
{
if($remarks1 = '')
{
$this->db->where('id', $id);
$this->db->update($this->db_sdip, array(
'remarks1 ' => 'Approved',
'amc_remark' => 'Office Note Dated '.date('d-m-Y')
));
}else{
$this->db->where('id', $id);
$this->db->update($this->db_sdip, array(
'remarks1 ' => 'Rejected',
'amc_remark' => 'Wrong Funding Date'
));
}
}
break;
default:
echo "Invalid Input";
}
}
}
else
{
return NULL;
}
}