php获取网址怎么缩短 PHP网址缩短代码(生成短网址)_PHP教程

function shorturl($input) {

$base32 = 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 .= $base32[$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