Generation code for an php short web address of mimic microblog short web address

2021-06-28 08:58:51
OfStack

Share the generation code for an php short web address.

 
<!DOCTYPE html> 
<html lang="en"> 
<head> 
<meta charset="utf-8" /> 
<title>urlShort</title> 
</head> 
<body> 
<form action="urlShort.php" method="post"> 
<input type="text" size="16" name="url" value=" Enter Web address " onfocus="if(this.value==' Enter Web address '){this.value='';}" onblur="if(this.value==''){this.value=' Enter Web address '};"> 
<input type="submit" value="  generate  " /> 
</form> 
</body> 
</html> 
<?php 
header("Content-Type:text/html;charset=UTF-8"); 
function base62($x){ 
$show = ''; 
while($x>0){ 
$s = $x % 62; 
if ($s > 35){ 
$s = chr($s + 61); 
}else if ($s > 5 && $S<=35){ 
$s = chr($s + 55); 
} www.ofstack.com 
$show .= $s; 
$x = floor($x/62); 
} 
return $show; 
} 
// Generate Short Web Address  
function url_short($url){ 
$url = crc32($url); 
$result = sprintf("%u",$url); 
return base62($result); 
} 

echo (" Generate a short web address for: <a href='http://$_POST[url]'>".url_short($_POST['url'])."</a>");