How to write this

[cmb]

what is the correct way to wright this

while ( 5 < $c <= 9){

}

[cmb]

while ( 5 < $c  && $c <= 9){
}

[Donald.]

That should work fine.

 

<?php
$c = 6;

while ( 5 < $c && $c <= 9){
//Do something
}
?>

 

What's the problem?

[carugala]

What's the problem?

 

me too!

 

there is no 'correct way'.  either the logic works, or it doesn't.  Looks to me, you want $c to be gt 5 and lte 9 to continue the loop....

 

coupla things, style wise:

 

make compound conditionals consistent.  if (cond1 && cond2 && cond3), condX should be consistent. 5<$var and $var>5 are logically the same, so cond1, cond2, cond3 should be the same format...  this is piddling, but good practice, hence:

 

while ( 5 < $c && $c <= 9) is better written as while ($c>5 && $c<=9)...

 

this is piddlin, along the same lines, but perhaps more useful.

 

with conditional loops, make the condition ASAP, as in KISS.  Actually works well for all conditionals...

 

I want to find all female canucks of legal age, who can driveget me to the border.

 

if ($sex == f && $nationality = can && $age>21 && issset($driver_id) && $hasGPS)

 

logically may work, but is horrible to figure out, throw in some () and/or, and gets messy fast....

 

whereas:

 

while($notFound) OR while($found) OR while(~$found) is lightly more elegant in a human way, or not.  just passing logic to var value, syntactically makes conditional loops easier to deal with.

 

oops, imho

 

$foobar = //var to test

$good = new array(6,7,8,9);

while(in_array($foobar, $good))