运用PHP函数parse_url分析信息抓取_PHP教程

1. $url = "http://www.electrictoolbox.
   com/php-extract-domain-from-full-url/";
2. $parts = parse_url($url);

输出:

1. Array
2. (
3. [scheme] => http
4. [host] => www.electrictoolbox.com
5. [path] => /php-extract-
   domain-from-full-url/
6. )

又如PHP函数parse_url使用方法:

< ?php  
$url = 'http://username:password
@hostname/path?arg=value#anchor';  
print_r(parse_url($url));  
echo parse_url($url, PHP_URL_PATH);  
?> 

输出:

Array  
(  
[scheme] => http  
[host] => hostname  
[user] => username  
[pass] => password  
[path] => /path  
[query] => arg=value 
[fragment] => anchor  
)  

可以看到,PHP函数parse_url可以很容易分解出一个URL的各个部,那如果要拿指定的部分出来的话也很容易,如

echo parse_url($url, PHP_URL_PATH);就是在第二个参数中,设定如下的参数:

PHP_URL_SCHEME, PHP_URL_HOST, PHP_URL_PORT, PHP_URL_USER, PHP_URL_PASS, PHP_URL_PATH, PHP_URL_QUERY or PHP_URL_FRAGMENT.

http://www.bkjia.com/PHPjc/445957.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445957.htmlTechArticle$ url = http://www.electrictoolbox. com/php-extract-domain-from-full-url/ ; $ parts = parse_url ($url); 输出: Array ( [scheme]= http [host]= www.electrictoolbox.com [path]= /php-...