I have about 20 different variables and i want to compare this variables with each other to check weather they are equal or not.
Example
$var1 = 1;
$var2 = 2;
$var3 = 1;
$var4 = 8;
.
.
.
$var10 = 2;
Now i want to check...
if($var1 == $var2 || $var1 == $var3 || $var1 == $var4 || ......... || $var2 == $var3 || $var2 == $var4 || ............. || $var8 = $var9 || $var8 == $var10 ||...)
{
echo 'At-least two variables have same value';
}
I am finding for an easy to do this. Any Suggestions?
$arr = array($var1, $var2, ... , $var10);
if (count($arr) !== count(array_unique($arr))) {
echo 'At-least two variables have same value';
}
If you want to find out if any of the variables are duplicates, put them in an array and use the array_count_values
:
array_count_values()
returns an array using the values of the input array as keys and their frequency in input as values.
If you have any values greater than 1 in the result, there is a match.
Eg
$values = array(1,2,3,1);
if(max(array_count_values($values)) > 1) {
...
firstly,save them to an array,and everything becomes easy
$list=array("1"=>$var1,"2"=>$var2,......,"10"=>$var10);
$list2=array_unique($list);
if(count($list2) != count($list))
echo 'At-least two variables have same value';
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