[RESOLVED] working with strings

[qadeer_ahmad]

Hi,
i am working with a string like
$str="a_au_noun_sing, a_au_noun_plu,b_au_noun_sing,c_au_noun_sing,c_au_noun_plu,a_au_noun_sing,b_au_noun_sing,a_au_noun_sing";

My first problem is that i want to sort this string with distinct records mean if thier is duplicate record then only one show here.
above string will out put me
$distince="a_au_noun_sing, a_au_noun_plu,b_au_noun_sing,c_au_noun_sing,c_au_noun_plu";

Second in each string as you see it start like (a, b, c_) i want to get (a,b,c) only no duplicate here too that mean above string will give me
$cat="a,b,c";

Thanks

[SumitGupta]

Hi,

I suggest you put the following logic...

Make two empty array ...
Now explode your string with "," comma;
Loop through each item of splited array..
now check if the first value is in first array..if its there forget it else put it as new item for array.

Now check for first character of spliteString in second array if its there forget it otherwise put it in array.

End the loop and enjoy

[Weedpacket]

Or explode on the comma, then put the first character of each element of the result into a new array. Then to weed out the duplicates use one of the [man]array[/man] functions (figuring out which one I leave as an exercise for the reader).