$url = 'http://www.test.com/icons/favicon-54.ico, http://www.baidu.com/bb, http://www.sina.com, https://gss0.bdstatic.com/70cFsjip0QIZ8tyhnq/logo.ico';
$pattern = "|http:\/\/[^,]+?\.ico,?|U";
preg_match_all($pattern, $url, $matches);
print_r($matches);
输出结果:
Array
(
[0] => Array
(
[0] => http://www.test.com/icons/favicon-54.ico
[1] => https://gss0.bdstatic.com/70cFsjip0QIZ8tyhnq/logo.ico
)
)
不是非常准确的方法
/^http://(.+)\.ico$/U
^http:\/\/.*?\.ico$
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