Current Codes:
<?php
// See the AND operator; How do I simplify/shorten this line?
if( $some_variable !== 'uk' && $some_variable !== 'in' ) {
// Do something
}
?>
And:
<?php
// See the OR operator; How do I simplify/shorten this line?
if( $some_variable !== 'uk' || $some_variable !== 'in' ) {
// Do something else
}
?>
Is there a simpler (i.e. shorter) way to write the two conditions?
NOTE: Yes, they are different, and I am expecting different ways to shorten the codes.
For your first code, you can use a short alteration of the answer given by @ShankarDamodaran using in_array():
if ( !in_array($some_variable, array('uk','in'), true ) ) {
or even shorter with [] notation available since php 5.4 as pointed out by @Forty in the comments
if ( !in_array($some_variable, ['uk','in'], true ) ) {
is the same as:
if ( $some_variable !== 'uk' && $some_variable !== 'in' ) {
... but shorter. Especially if you compare more than just 'uk' and 'in'. I do not use an additional variable (Shankar used $os) but instead define the array in the if statement. Some might find that dirty, i find it quick and neat :D
The problem with your second code is that it can easily be exchanged with just TRUE since:
if (true) {
equals
if ( $some_variable !== 'uk' || $some_variable !== 'in' ) {
You are asking if the value of a string is not A or Not B. If it is A, it is definitely not also B and if it is B it is definitely not A. And if it is C or literally anything else, it is also not A and not B. So that statement always (not taking into account schrödingers law here) returns true.
You can make use of in_array() in PHP.
$os = array("uk", "us"); // You can set multiple check conditions here
if (in_array("uk", $os)) //Founds a match !
{
echo "Got you";
}
If you're planning on building a function in the if statement, I'd also advise the use of in_array. It's a lot cleaner.
If you're attempting to assign values to variables you can use the if/else shorthand:
$variable_to_fill = $some_variable !== 'uk' ? false : true;
You need to multi value check. Try using the following code :
<?php
$illstack=array(...............);
$val=array('uk','bn','in');
if(count(array_intersect($illstack,$val))===count($val)){ // all of $val is in $illstack}
?>
Some basic regex would do the trick nicely for $some_variable !== 'uk' && $some_variable !== 'in':
if(!preg_match('/^uk|in$/', $some_variable)) {
// Do something
}