I have three strings , and I need to compare each string and the have to return unique values, by excluding the repeated values.
$str1 = 1,2,4 ;
$str2 = 2,6 ;
$str3 = 1,4,6 ;
Compare this string and return common value and avoid repeated value.
Output as :
$output = 1,2,4,6
avoid repetition.
Concatenate the three strings and explode them using comma operator in to an array, find the unique entries from that array using array_unique and finally implode it.
echo implode(',',array_unique(explode(',',$str1.','.$str2.','.$str3)));
Demonstration - PHP Native Functions
$str = preg_match_all('@[0-9]@',$str1.$str2.$str3,$mtch);
echo implode(',',array_unique($mtch[0]));