Php short domain name generation function

The short website has been popular for some time. I used to have contact with Sina Weibo apps before, but I have not figured it out. Recently I have come into contact with this stuff and studied it carefully, it is also easy to find short URLs. Next we will

The short website has been popular for some time. I used to have contact with Sina Weibo apps before, but I have not figured it out. Recently I have come into contact with this stuff and studied it carefully, it is also easy to find short URLs. Next we will

Php short domain name generation function

Public function createRandCode ($ string) {$ code = ''; $ hex_code = '1qaz2wsx3edc4rfv5t-gb6yhn7ujm8ik9ol0p _ '; $ now = microtime (true) * 10000; $ strlen = strlen ($ hex_code); $ hash_code = hash ('sha256 ', $ string); // a random length is defined for the encoding ,, length depends on step $ step = rand (8, 16); $ count = ceil (strlen ($ hash_code)/$ step); for ($ I = 0; $ I <$ count; $ I ++) {$ start = $ I * $ step; $ hex_num = substr ($ hash_code, $ start, $ step ); $ num = 0x3fffffff & (1 * '0x '. $ hex_num); $ n = $ num % $ strlen; $ code. = $ hex_code [$ n];} return $ code ;}

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