php - Removing duplicate words in semicolon separated string -


i have long string in format:

hello; world; this; is; a; string; hello; of; some; words;

it's semicolon + space separated. need remove duplicate words in string. resultant string should (with second hello; removed):

hello; world; this; is; a; string; of; some; words;

how this?

here's example in php:

$string = "hello; world; this; is; a; string; hello; of; some; words;"; $string = implode("; ", array_unique(explode("; ", $string)));

string contain new string: "hello; world; this; is; a; string; of; some; words;". if want string this: "hello world string of words" remove "; " implode parameters

edit: requested vihan1086, have posted original code below:

$string = "hello; world; this; is; a; string; hello; of; some; words;"; $matches = array_unique(explode("; ", $string)) $string = implode("; ", $matches);

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