PHP URL shortened code (generate short URLs) _php tutorial

Short URLs now used more than a lot of jump site will be generated, such as the original micro-blog has this function, I would like to recommend a PHP URL to shorten the code

Each URL is replaced by 6 characters, and (32^6) can have a maximum of 1,073,741,824 short URLs. Of course, you can also record more detailed information such as access history, creation time, etc. If it is not enough, it can also be deleted for a long time.

The code is as follows

Copy Code

function Shorturl ($input) { $base = Array ( ' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' g ', ' H ', ' I ', ' j ', ' K ', ' l ', ' m ', ' n ', ' o ', ' P ', ' Q ', ' R ', ' s ', ' t ', ' u ', ' V ', ' w ', ' X ', ' Y ', ' z ', ' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ' ); $hex = MD5 ($input); $hexLen = strlen ($hex); $subHexLen = $hexLen/8; $output = Array (); for ($i = 0; $i < $subHexLen; $i + +) { $subHex = substr ($hex, $i * 8, 8); $int = 0X3FFFFFFF & (1 * (' 0x '. $subHex)); $out = "; for ($j = 0; $j < 6; $j + +) { $val = 0x0000001F & $int; $out. = $base 32[$val]; $int = $int >> 5; } $output [] = $out; } return $output; } Sample code to Test/use the above function: $input = ' HTTP://WWW.BKJIA.C0M/1 '; $output = Shorturl ($input); echo "Input: $inputn"; echo "Output: {$output [0]}n]; echo "{$output [1]}n]; echo "{$output [2]}n]; echo "{$output [3]}n]; echo "n"; $input = ' HTTP://WWW.BKJIA.C0M/2 '; $output = Shorturl ($input); echo "Input: $inputn"; echo "Output: {$output [0]}n]; echo "{$output [1]}n]; echo "{$output [2]}n]; echo "{$output [3]}n]; echo "n"; Output: Input:http://www.bkjia.c0m/1 output:h0xg4r Bdr3tw Osk2d3 4azfqa Input:http://www.bkjia.c0m/2 Output:tm5kxb Ceoj2s Yw3dvl Nrmrxl

http://www.bkjia.com/PHPjc/632729.html www.bkjia.com true http://www.bkjia.com/PHPjc/632729.html techarticle short URLs are now used more than a lot of jump site will be generated, like the original Micro Bo also has this function, below I will recommend a PHP URL shortened code each URL with 6 characters instead of ...

