Hello,

I have a single array with several of the same values. And I only want to loop over DIFFERENT values. How could I go about doing this?

Example

166-01 001;09;UO;
166-01 001;09;UO;
166-01 001;09;UO;
166-01 001;09;UO;
166-01 001;09;UO;
166-01 001;09;UO;
166-01 001;09;UO;_86
166-01 001;09;UO;_86
166-01 001;09;UO;_86
166-01 001;09;UO;_86
166-01 001;09;UO;_86
166-01 001;09;UO;_86_97
166-01 001;09;UO;_86_97
166-01 001;09;UO;_86_97
166-01 001;09;UO;_86_97_108
166-01 001;09;UO;_86_97_108
166-01 001;09;UO;_86_97_108_119
166-01 001;09;UO;_86_97_108_119

I have that in a single array, but I only want to loop for the different ones. So it would loop once for nothing, then once for _86, then once for _86_97, then once for _86_97_108, and then once for _86-97_108_119. So only loop for different key values,

or would there be a way to count the number of different keys?