Re: [PHP] Switch statement Question
Hi,
I have a code snippet here as in the following:
//Switch statements between the four options
switch($string) {
case :
$string= NOT book.author='All';
break;
default:
$string= $string . AND NOT book.author='All';
break;
}
This code does work, but I am wondering if it is possible in the switch statement clauses for me to do something like case does not equal to a certain author name if I don't want $string with that content to be processed. or, do I always use default in this case?
Thanks in advance.
Alice
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Well I will have to mention that switch becomes if after all internally
so you could always use the if statement.
I am a great fan of switch but since eclipse fail to format correctly
embedded switch statements I am starting to use the old all good if()
since it is the same thing. It is a matter of style actually although
switch is slightly slower (so slightly that you can't notice in any case).
I think there was a thread in this list for this comparison a few days ago.
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[PHP] Switch statement Question
Hi,
I have a code snippet here as in the following:
//Switch statements between the four options
switch($string) {
case :
$string= NOT book.author='All';
break;
default:
$string= $string . AND NOT book.author='All';
break;
}
This code does work, but I am wondering if it is possible in the switch
statement clauses for me to do something like case does not equal to a certain
author name if I don't want $string with that content to be processed. or, do I
always use default in this case?
Thanks in advance.
Alice
_
All-in-one security and maintenance for your PC. Get a free 90-day trial!
http://www.windowsonecare.com/purchase/trial.aspx?sc_cid=wl_wlmail
RE: [PHP] Switch statement Question
-Original Message-
From: Alice Wei [mailto:aj...@alumni.iu.edu]
Sent: Thursday, January 29, 2009 3:02 PM
To: php-general@lists.php.net
Subject: [PHP] Switch statement Question
Hi,
I have a code snippet here as in the following:
//Switch statements between the four options
switch($string) {
case :
$string= NOT book.author='All';
break;
default:
$string= $string . AND NOT book.author='All';
break;
}
This code does work, but I am wondering if it is possible in the
switch statement clauses for me to do something like case does not
equal to a certain author name if I don't want $string with that
content to be processed. or, do I always use default in this case?
It's a bit non-conventional, but the switch block can be used like so:
switch(true) {
case (x y):
dosomething();
break;
case (y == 0):
dosomethingelse();
break;
default:
somethingelseentirely();
break;
}
...this way, your case statements can be expressions themselves, and it
will always pick at least one of them to fire.
HTH,
// Todd
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Re: [PHP] Switch statement Question
Boyd, Todd M. schreef:
-Original Message-
From: Alice Wei [mailto:aj...@alumni.iu.edu]
Sent: Thursday, January 29, 2009 3:02 PM
To: php-general@lists.php.net
Subject: [PHP] Switch statement Question
Hi,
I have a code snippet here as in the following:
//Switch statements between the four options
switch($string) {
case :
$string= NOT book.author='All';
break;
default:
$string= $string . AND NOT book.author='All';
break;
}
This code does work, but I am wondering if it is possible in the
switch statement clauses for me to do something like case does not
equal to a certain author name if I don't want $string with that
content to be processed. or, do I always use default in this case?
It's a bit non-conventional, but the switch block can be used like so:
switch(true) {
case (x y):
dosomething();
break;
case (y == 0):
dosomethingelse();
break;
default:
somethingelseentirely();
break;
}
some people really don't like this kind of thing (hi Robbert :-)),
either way beware that the equality test is not strict, that is
to say autocasting occurs (variable type doesn't have to match)
an example:
switch (true) {
case 1:
echo did you expect this?\n; // -- this is output
break;
case true:
echo or this?\n;
break;
}
...this way, your case statements can be expressions themselves, and it
will always pick at least one of them to fire.
HTH,
// Todd
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[PHP] switch statement question
Say i have a variable $string_var = Once upon a time;
is there a way to do this:
Switch($string_var)
{
case(contains Once):
doSomething();
break;
case(contains the end.)
doOtherThing();
break;
case(contains time)
doNothing();
break;
default:
echo ERROR
}
Thanks
Alex
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RE: [PHP] switch statement question
[snip]
Say i have a variable $string_var = Once upon a time;
is there a way to do this:
Switch($string_var)
{
case(contains Once):
doSomething();
break;
case(contains the end.)
doOtherThing();
break;
case(contains time)
doNothing();
break;
default:
echo ERROR
}
[/snip]
http://www.php.net/manual/en/control-structures.switch.php
Yes Virginia, there is a PHP function :^]. You can explode your $string_var
into an array, loop through the array and test each word for a match.
HTH!
Jay
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Re: [PHP] switch statement question
Alternatively Alexander,
take a look at the string functions eg strstr(), stristr(), and strpos() all
of which can be used to make a condition within the case() criteria.
Regards,
=dn
[snip]
Say i have a variable $string_var = Once upon a time;
is there a way to do this:
Switch($string_var)
{
case(contains Once):
doSomething();
break;
case(contains the end.)
doOtherThing();
break;
case(contains time)
doNothing();
break;
default:
echo ERROR
}
[/snip]
http://www.php.net/manual/en/control-structures.switch.php
Yes Virginia, there is a PHP function :^]. You can explode your
$string_var
into an array, loop through the array and test each word for a match.
HTH!
Jay
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