Table of Contents
php创建短ID Create short IDs with PHP - Like Youtube or TinyURL?
Home Backend Development PHP Tutorial php 创设短地址 (var_export)

php 创设短地址 (var_export)

Jun 13, 2016 am 10:56 AM
array lt out php

php 创建短地址 (var_export)

提交页面 shorten.php:

?

?

Copy after login
?

?

处理页面 show.php:

?

?

<?phpinclude 'functions.php';include 'shorturls.php';$entry = $_POST['submit'];$url = $_POST['url'];$output = '';if($entry == 'Shorten Url' AND $url){	if(!in_array($url,$shortUrls))	{		$uif = alphaID(count($shortUrls),false,6);				if(!array_key_exists($uif,$shortUrls))		{			$shortUrls[$uif] = $url;									$file = fopen('shorturls.php','w'); 			fwrite($file,'<?php $shortUrls = ' . var_export($shortUrls,true) . ';?>');			fclose($file);			$output = 'Original Url : '.$url.'<br> Shorten Ulr : <a href="http://www.yourdomain.com/api/s='.%24uif.'" target="_blank">http://www.yourdomain.com/api/s='.$uif.'</a>';		}		else $output = 'access error';	}	else	{		$uif = array_search($url,$shortUrls);		$output =  'Original Url : '.$url.'<br> Shorten Ulr : <a href="http://www.yourdomain.com/api/s='.%24uif.'" target="_blank">http://www.yourdomain.com/api/s='.$uif.'</a>';	}		echo $output.'<br><br> <a href="shorten.php">Back</a>';}?>
Copy after login
?

?

关联页面?functions.php

?

?

<?php function alphaID($in, $to_num = false, $pad_up = false, $passKey = null){	$index = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";	if ($passKey !== null) {		// Although this function's purpose is to just make the		// ID short - and not so much secure,		// with this patch by Simon Franz (http://blog.snaky.org/)		// you can optionally supply a password to make it harder		// to calculate the corresponding numeric ID		for ($n = 0; $n<strlen($index); $n++) $i[] = substr( $index,$n ,1);		$passhash = hash('sha256',$passKey);		$passhash = (strlen($passhash) < strlen($index))			? hash('sha512',$passKey)			: $passhash;		for ($n=0; $n < strlen($index); $n++) $p[] =  substr($passhash, $n ,1);		array_multisort($p,  SORT_DESC, $i);		$index = implode($i);	}	$base  = strlen($index);	if ($to_num) {		// Digital number  <<--  alphabet letter code		$in  = strrev($in);		$out = 0;		$len = strlen($in) - 1;		for ($t = 0; $t <= $len; $t++) {			$bcpow = bcpow($base, $len - $t);			$out   = $out + strpos($index, substr($in, $t, 1)) * $bcpow;		}		if (is_numeric($pad_up)) {			$pad_up--;			if ($pad_up > 0) $out -= pow($base, $pad_up);		}		$out = sprintf('%F', $out);		$out = substr($out, 0, strpos($out, '.'));	} 	else 	{		// Digital number  -->>  alphabet letter code		if (is_numeric($pad_up)) {			$pad_up--;			if ($pad_up > 0) $in += pow($base, $pad_up);		}		$out = "";		for ($t = floor(log($in, $base)); $t >= 0; $t--) {			$bcp = bcpow($base, $t);			$a   = floor($in / $bcp) % $base;			$out = $out . substr($index, $a, 1);			$in  = $in - ($a * $bcp);		}		$out = strrev($out); // reverse	}	return $out;}?>
Copy after login
?

?

关联页面?shorturls.php

?

?

<?php $shortUrls = array ();?>
Copy after login
?

?

?

原理: 将提交的网址存放数组里面,同时为之产生一个唯一的键,之后将该数组存放文本中,当然你也可以存放到数据库中,此实例为存放到文本中。

?

一些函数的解释:

?

1. array_search() 函数

?

array_search(value,array,strict)

?

array_search() 函数与 in_array() 一样,在数组中查找一个键值。如果找到了该值,匹配元素的键名会被返回。如果没找到,则返回 false。

?

2.?var_export()?函数

?

?

此函数返回关于传递给该函数的变量的结构信息,它和 var_dump() 类似,不同的是其返回的表示是合法的 PHP 代码。

您可以通过将函数的第二个参数设置为 TRUE,从而返回变量的表示。

?

比较 var_export() 和 var_dump().

?

?

?

最后是 接受页面?redirect.php

?

?

<?phpinclude 'shorturls.php';$uid = $_GET['uid'];$addr = ($uid AND array_key_exists($uid,$shortUrls)) ? $shortUrls[$uid]: '/';header('location:'.$addr);
Copy after login
?

此页面需要结合 .htaccess or .waccess 使用

?

?

RewriteEngine On RewriteRule ^s=(.*)$ /redirect.php?uid=$1 [R=301,L]
Copy after login
?

?

?

?

关联:

php创建短ID Create short IDs with PHP - Like Youtube or TinyURL?

?

?

如果问题,敬请留言~

?

?

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

See all articles