如何使用PHP生成短网址.txt文件？

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pythondef urlShort(url): url=crc32(url) result=sprintf(%u, url) sUrl='' while result: s=result[-2:] if len(s)==5: s=chr(ord(s) + 61) elif len(s)==4: s=chr(ord(s) + 55) sUrl +=s result=floor(result / 62) return sUrl

function urlShort($url){ $url= crc32($url); $result= sprintf("%u", $url); $sUrl= ''; while($result>0){ $s= $result%62; if($s>35){ $s= chr($s+61); } elseif($s>9 && $s<=35){ $s= chr($s+ 55); } $sUrl.= $s; $result= floor($result/62); } return $sUrl; } $url = 'www.sharefamily.net'; $sUrl = urlShort($url); echo '网址：'.$url."\n\n"; echo '短网址：'.$sUrl."\n\n";