以下是对php中Base62类的用法进行了详细的分析介绍,需要的朋友可以过来参考下
Base62类源码:
复制代码 代码如下:
class Base62 {
private $string = "vPh7zZwA2LyU4bGq5tcVfIMxJi6XaSoK9CNp0OWljYTHQ8REnmu31BrdgeDkFs";
public function base62_encode($str) {
$out = '';
for($t=floor(log10($str)/log10(62)); $t>=0; $t--) {
$a = floor($str / pow(62, $t));
$out = $out.substr($this->string, $a, 1);
$str = $str - ($a * pow(62, $t));
}
return $out;
}
public function base62_decode($str) {
$out = 0;
$len = strlen($str) - 1;
for($t=0; $t $out = $out + strpos($this->string, substr($str, $t, 1)) * pow(62, $len - $t);
}
return substr(sprintf("%f", $out), 0, -7);
}
}
用法:
复制代码 代码如下:
$str = 1;
$object = new Base62();
echo $object->base62_encode($str) . "\n";
echo $object->base62_decode($object->base62_encode($str)) . "\n";

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