Question

我有很多链接：

http://exmpale.com/abc/exmpale.html
http://exmpale.com/abc/exmpale1.html
http://exmpale.com/abc/exmpale2.html
http://exmpale.com/abc/exmpale/exmpale1.html
http://exmpale.com/abc/exmpale/exmpale2.html
http://exmpale.com/abc/exmpale/exmpale3.html
http://exmpale.com/abcd/exmpale1.html
http://exmpale.com/abcd/exmpale2.html
http://exmpale.com/abcd/exmpale2.html
http://exmpale.com/abcd/exmpale4.html
http://exmpale.com/abc/abc/exmpale1.html
http://exmpale.com/abc/abc/exmpale2.html
http://exmpale.com/abc/abc/exmpale3.html
http://exmpale.com/abc/abc/exmpale4.html
http://exmpale.com/abc/abc/exmpale5.html

我使用php，我希望得到像http://exmpale.com/abc/(*).html这样的所有链接并将其列在数组中。对不起，我忘记了代码。我的代码

$a = array(
    0 => 'http://exmpale.com/abc/exmpale.html',
    1 => 'http://exmpale.com/abc/exmpale1.html',
    2 => 'http://exmpale.com/abc/exmpale2.html',
    3 => 'http://exmpale.com/abc/exmpale/exmpale1.html',
    4 => 'http://exmpale.com/abc/exmpale/exmpale2.html',
    5 => 'http://exmpale.com/abc/exmpale/exmpale3.html',
    6 => 'http://exmpale.com/abcd/exmpale1.html',
    7 => 'http://exmpale.com/abcd/exmpale2.html',
    8 => 'http://exmpale.com/abcd/exmpale2.html',
    9 => 'http://exmpale.com/abcd/exmpale4.html',
    10 => 'http://exmpale.com/abc/abc/exmpale1.html',
    11 => 'http://exmpale.com/abc/abc/exmpale2.html',
    12 => 'http://exmpale.com/abc/abc/exmpale3.html',
    13 => 'http://exmpale.com/abc/abc/exmpale4.html',
    14 => 'http://exmpale.com/abc/abc/exmpale5.html',
);

foreach($a as $k => $v ){
    $abc = preg_match_all('/http\:\/\/exmpale\.com\/abc\/(.*?)\.html/',$v,$b);  
    print_r($b[1]);
}

我希望得到结果。

$result = array(
  'http://exmpale.com/abc/exmpale.html',
  'http://exmpale.com/abc/exmpale1.html',
  'http://exmpale.com/abc/exmpale2.html');

但它取得了所有结果，请帮助我谢谢你。

Answer 1

只需使用php函数preg_match_all，匹配的字符串将加载到您作为参数提供给上述函数的数组中。请阅读preg_match_all上的PHP手册，并根据需要创建一个正则表达式。您可以测试正则表达式here

Answer 2

由于您没有提供存储URL的数据结构，我认为它是一个原始字符串：

$data_raw = "http://exmpale.com/abc/exmpale.html
http://exmpale.com/abc/exmpale1.html
http://exmpale.com/abc/exmpale2.html
http://exmpale.com/abc/exmpale/exmpale1.html
http://exmpale.com/abc/exmpale/exmpale2.html
http://exmpale.com/abc/exmpale/exmpale3.html
http://exmpale.com/abcd/exmpale1.html
http://exmpale.com/abcd/exmpale2.html
http://exmpale.com/abcd/exmpale2.html
http://exmpale.com/abcd/exmpale4.html
http://exmpale.com/abc/abc/exmpale1.html
http://exmpale.com/abc/abc/exmpale2.html
http://exmpale.com/abc/abc/exmpale3.html
http://exmpale.com/abc/abc/exmpale4.html
http://exmpale.com/abc/abc/exmpale5.html";

$urls = explode("\n", $data_raw);

$accept_host = "exmpale.com";
$accept_path = "/abc/";

$filtered_urls = array_filter($urls, function($url) use($accept_host, $accept_path) {
    $parts = parse_url($url);   
    return $parts['host'] == $accept_host
        && strpos($parts['path'], $accept_path) === 0
        && strpos($parts['path'], '/', strlen($accept_path)) === false;
});

printf("<pre>%s</pre>", print_r($filtered_urls, true));

收率：

Array
(
    [0] => http://exmpale.com/abc/exmpale.html
    [1] => http://exmpale.com/abc/exmpale1.html
    [2] => http://exmpale.com/abc/exmpale2.html
)

PHP比较多个字符串

2 个答案: