運用PHP函數parse_url分析資訊抓取_PHP教程

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

輸出:

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

又如PHP函數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); 
  
?> 
 

輸出:

 

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

可以看到,PHP函數parse_url可以很容易分解出一個URL的各個部,那如果要拿指定的部分出來的話也很容易,如

echo parse_url($url, PHP_URL_PATH);就是在第二個參數中,設定如下的參數:

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); 輸出: Array ( [scheme]= http [host]= www.electrictoolbox.com [path]= /php-...

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