Switch Statement

[PiercedKnob]

Hi,

I would like to test a variable is between two values, other programming languages allow this in its Case statement however i have been unable to find anything to suggest that you can do it in PHP.

I am after something like :-

Switch ($Variable)
{
Case >1 AND <=10 :
break;
Case >10 and <=20 :
break;
etc..
}

Can anyone think of an easy way of doing this ?

Kind Regards

Wayne

P.S. I am a newbie with PHP.

[sarah]

Is there a reason that you can't use an IF statement?

[sarah]

This works though...

<?
$number=13;
Switch ($number) 
{ 
Case ($number >1 AND $number<=10):
	$color="red"; 
	break; 
Case ($number >10 AND $number<=20):
	$color="blue";
	break;
} 
print("$color");
?>

[maybl8r03]

For switch conditions with more complex logic, you might want to use something like the following:

<?php
$number=13; 
switch (TRUE)  

{  

Case ($number >1 AND $number<=10): 
    $color="red";  

    break;  

Case ($number >10 AND $number<=20): 
    $color="blue"; 
    break; 
}  

print("$color"); 
?> 

Example

<?php
$strValue="qwerty"; 
Switch ($strValue)  

{  

Case (preg_match("/qwer/i", $strValue)): 
    $strMessage = "Found qwert";  

    break;  

Case (preg_match("/tyef/i", $strValue)): 
    $strMessage = "Found tyef"; 
    break; 
default:
	$strMessage = "Found NOTHIN'";
}  

print($strMessage); 
?> 

Would result in Found NOTHIN' but...

<?php
$strValue="qwerty"; 
Switch (TRUE)  

{  

Case (preg_match("/qwer/i", $strValue)): 
    $strMessage = "Found qwert";  

    break;  

Case (preg_match("/tyef/i", $strValue)): 
    $strMessage = "Found tyef"; 
    break; 
default:
	$strMessage = "Found NOTHIN'";
}  

print($strMessage); 
?> 

Would result in Found qwert

[PiercedKnob]

Thanks for all your help. I am sure i tried :-

<?
$number=13;
Switch ($number)

{

Case ($number >1 AND $number<=10):
$color="red";

break;

Case ($number >10 AND $number<=20):
$color="blue";
break;
}

print("$color");
?>

but nevermind, will give it another go.

Didn't want to use the if because its going to get rather large.

Thanx all

(not too sure what preg_match does so i don't understand that post. When i have time i will check it out though 🙂 )

Wayne

[Tj_C]

I think the point of May's post isn't the preg_match() function, but that the switch staement is

$var = something;

Switch (TRUE) {

case :

}

instead of

$var = something;

Switch ($var) {

case:
}

hope that helps

[sarahk]

If you are just trying to match a number to a value consider:

$colors = array('red' => 10, 'blue' => 20, 'green' => 30);
$number = 13;
$color = 'white';  // the default color
$getNext = false;

foreach( $colors as $k => v)
{
  if ($getNext == true)
  { 
    $color = $k;
    $getNext = false;
  }
  if ($number >= $v) $getNext = true;
}

In this, it only sets the color on the loop after our number is greater than the current number. This will happen on every loop until the number is less than the array's number. Then getNext will never be set to true and the color will not change.

then again it might be easier to do it with the colors descending in the array

$colors = array('green' => 30, 'blue' => 20, 'red' => 10 );
$number = 13;
$color = 'white';  // the default color

foreach( $colors as $k => v)
{
  if ($number <= $v) $color = $k;
}

mmm, yes that's much better. So all you have to is load up the array in reverse order with the color and max number pairs. The => in the array just links the colors and the max number, and is not a maths symbol.
hope this helps

[PiercedKnob]

Originally posted by sarahk

$colors = array('green' => 30, 'blue' => 20, 'red' => 10 );
$number = 13;
$color = 'white';  // the default color

foreach( $colors as $k => v)
{
  if ($number <= $v) $color = $k;
}

Hmm i like that bit of code 🙂

Thanks

Wayne