Code examples of 3 ways to generate short URLs in PHP, 3 examples of PHP generation

Code examples of 3 ways to generate short URLs in PHP, 3 examples of PHP generation_PHP tutorial

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Release： 2016-07-13 10:23:19

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Code examples of 3 methods for generating short URLs in PHP, 3 examples of generating short URLs in PHP

URL shortening service may no longer be unfamiliar to many friends. Now there are many application models in most Weibo, mobile phone email reminders and other places, and occupy a certain market. It is estimated that many friends are using it now. I have seen Sina’s short connection service and found that it mainly consists of 6 character strings.

There are too many algorithmic things, and there is no need to discuss too much. The most important thing is implementation. Here are the codes of the three methods:

<&#63;php 
 
//纯随机生成方法
function random($length, $pool = '') 
  { 
    $random = ''; 
 
    if (empty($pool)) { 
      $pool  = 'abcdefghkmnpqrstuvwxyz'; 
      $pool  .= '23456789'; 
    } 
 
    srand ((double)microtime()*1000000); 
 
    for($i = 0; $i < $length; $i++) 
    { 
      $random .= substr($pool,(rand()%(strlen ($pool))), 1); 
    } 
 
    return $random; 
  } 
 
 $a=random(6);
print_r($a);  
 
// 枚举生成方法
function shorturl($input) { 
 $base32 = array ( 
  "0", "1", "2", "3", "4", "5", "6", "7", "8", "9",  
"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",  
"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"
  ); 
 
 $hex = md5($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; 
} 
$a=shorturl("http://www.bkjia.com");
print_r($a);
//62 位生成方法
 
function base62($x) 
 
{ 
 
$show= ''; 
 
 while($x> 0) { 
 
$s= $x% 62; 
 
if($s> 35) { 
 
$s= chr($s+61);       
 
} elseif($s> 9 && $s<=35) { 
 
$s= chr($s+ 55); 
 
} 
 
$show.= $s; 
 
 $x= floor($x/62); 
 
} 
 
return $show;   
 
} 
 
function urlShort($url) 
 
{ 
 
$url= crc32($url); 
 
$result= sprintf("%u", $url); 
 
return base62($result); 
 
 } 
 
echo urlShort("http://www.bkjia.com/"); 
 
&#63;>

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PHP generated file code, please help,

The {{} after your foreach should include all the following content

The correct one is
$con=array(array('News Title','News Content'),array('News Title 2 ','News content 2'));

foreach($con as $id=>$val){
$title=$val[0];
$content=$val [1];
$path=$id.'.htm';
$fp=fopen("tmp.htm","r"); //Read-only open template
$str=fread ($fp,filesize("tmp.htm"));//Read the content in the template
$str=str_replace("{title}",$title,$str);
$str=str_replace( "{content}",$content,$str);//Replacement content
fclose($fp);

$handle=fopen($path,"w"); //Writing method Open the news path
fwrite($handle,$str); //Write the content just replaced into the generated HTML file
fclose($handle);
echo "Generation successful";
}