关于正则匹配，求答案，小女子这点分都给你了

Question

https://www.google.com.hk/search?tbs=sbi:AMhZZitjJ_1jEmRi0BYehYLGMeUJA4qruQ9dzxu3CrWYxTlwNWUBkEchpg4zMlHmItCzyNX_10HMDAtW-mbL5b9pf6qgQeEwQf9bFng0HNl5C7JopTa63wGNO_1xZfHEwwPbXrKTHiF05mmdqRGH2oBuzj4MbfonH1Jhh6d6joFoayj2RXNQhMWo6o87C2wloXVOOb4R5FWVvKuWDJTkhvGU5LGzTLsYIEP4dAcPJm-RKa4qgxqQZhkw2MTcAzmLXb09pL7xVu6gA9eERihl_1txwP9knl1tXP3peFXMKu-8Z_1piY8_1EImqL51Ty1F97abvfaX_1buqPjzu4WVRSHjb5mvySs6B48qvmkUVVe1TF6qObf9MD70TKQ32KbO8v-dE12ucpzP-2InX5hgoyV-LzS4Z-_1pX0t60mHz4vhVHZaCUbRzUoF6xMmhS4y379DrZ8gp3iAH1JEvAlKSUgc3hXrcr71BCbwZGoOpPiVQ-ETQcSgZs72FN6Lp4teFZz_19D2zHeRoANXc-pRRq09uwhx-MFIJTE43ipYYX4aU2ZCitbOZQQAtXc-siIUsYxB1gu0Z9fWI_1rx8kgBbHuKK7CZhnBzPKrkQaBCFJe4-9PJT2rcd6v5PCeRkNN-eBp47SsFnyDjkcyHIIciobCHUTqRrPtPGmp_1myIZ_1N0PJHOWsVcsZAbOPNBWztz429GDHQpM9l7w5-I0neIpjOPJXUbfKpxDn6BJlf4EM4cbNGLYpimY4a-_1hKn4CrrKIWJ6cvTvP7f1VwKoZuHvcmEb618MPQl1Mj2fWY4WvrRChRd-BZuVs9r6vjT0frpnDPp6unPrJh8x-k6NwYg86i18MPEaxBzHcKUfWEZ67SSPUrk98yp7k71M-8TuomeNGMbgadllizJbOXyn8aA-D0bH49SNlGmT2wJmhAZh5Wq4WmMAb1gz4FX38AC152zJ_1f1BgbPhszGXA0HFFnyK63ZUApkPDbcRVhuFnOEQCq0EhEU5aaIh-LRCJNEWEGUNTdyYMUJz5DYAQ_1rzLgaFb9Z_155DaTl2ukn5QE5UfeaKSiEV_1MnwB7P3i8tuXZxCy20DOmsKekCvGW0Gtsq7I9MhMMle6QY3NBqQ4CNAyZM64Wg9Znvsg_1Ru--cSA1WgfNgNmVdIRQR8fIGX9oueCK6UzGKDe4-RijUodm0NVJZh2DGcZ-cfjU6tZFl5juZhvQ5s7NPcaTlZyeWL92Pbrdljc0PdzQZtLLciR5nvfiYHHpolE3zeXNzOp85tp77wM2U57VTWHKTEcNCATMknnmfh-b9ThyZwKCXTyF-5SJbp_1eWmOJTroATBi0tokwV5pP2kNHPFV5aFunpjBhMVMUupsLZL7COULj2uKolfw54w上面是URL，我要得到上面的  “火影 忍者 鸣人” 那一句，要怎么匹配？
求答案URLphp

Answer 1

preg_match(/(?<=对对该图片的最佳猜测((?!<a).)*<a((?!>).)*>((?!<\/a>).)*(?=<\/a>)/, file_get_contents($url), $match);

Answer 2

上面的不行 这个实测通过：function getKeysearch($url)
{
if ($str = @file_get_contents($url))
{
if (preg_match('/对该图片的最佳猜测((?!<\/a>).)*(?=<\/a>)/', $str, $match))
{
return preg_replace('/^.*<a\s((?!>).)*>/', '', $match[0]);
}
}
}
$url = "https://www.google.com.hk/search?tbs=sbi:AMhZZitjJ_1jEmRi0BYehYLGMeUJA4qruQ9dzxu3CrWYxTlwNWUBkEchpg4zMlHmItCzyNX_10HMDAtW-mbL5b9pf6qgQeEwQf9bFng0HNl5C7JopTa63wGNO_1xZfHEwwPbXrKTHiF05mmdqRGH2oBuzj4MbfonH1Jhh6d6joFoayj2RXNQhMWo6o87C2wloXVOOb4R5FWVvKuWDJTkhvGU5LGzTLsYIEP4dAcPJm-RKa4qgxqQZhkw2MTcAzmLXb09pL7xVu6gA9eERihl_1txwP9knl1tXP3peFXMKu-8Z_1piY8_1EImqL51Ty1F97abvfaX_1buqPjzu4WVRSHjb5mvySs6B48qvmkUVVe1TF6qObf9MD70TKQ32KbO8v-dE12ucpzP-2InX5hgoyV-LzS4Z-_1pX0t60mHz4vhVHZaCUbRzUoF6xMmhS4y379DrZ8gp3iAH1JEvAlKSUgc3hXrcr71BCbwZGoOpPiVQ-ETQcSgZs72FN6Lp4teFZz_19D2zHeRoANXc-pRRq09uwhx-MFIJTE43ipYYX4aU2ZCitbOZQQAtXc-siIUsYxB1gu0Z9fWI_1rx8kgBbHuKK7CZhnBzPKrkQaBCFJe4-9PJT2rcd6v5PCeRkNN-eBp47SsFnyDjkcyHIIciobCHUTqRrPtPGmp_1myIZ_1N0PJHOWsVcsZAbOPNBWztz429GDHQpM9l7w5-I0neIpjOPJXUbfKpxDn6BJlf4EM4cbNGLYpimY4a-_1hKn4CrrKIWJ6cvTvP7f1VwKoZuHvcmEb618MPQl1Mj2fWY4WvrRChRd-BZuVs9r6vjT0frpnDPp6unPrJh8x-k6NwYg86i18MPEaxBzHcKUfWEZ67SSPUrk98yp7k71M-8TuomeNGMbgadllizJbOXyn8aA-D0bH49SNlGmT2wJmhAZh5Wq4WmMAb1gz4FX38AC152zJ_1f1BgbPhszGXA0HFFnyK63ZUApkPDbcRVhuFnOEQCq0EhEU5aaIh-LRCJNEWEGUNTdyYMUJz5DYAQ_1rzLgaFb9Z_155DaTl2ukn5QE5UfeaKSiEV_1MnwB7P3i8tuXZxCy20DOmsKekCvGW0Gtsq7I9MhMMle6QY3NBqQ4CNAyZM64Wg9Znvsg_1Ru--cSA1WgfNgNmVdIRQR8fIGX9oueCK6UzGKDe4-RijUodm0NVJZh2DGcZ-cfjU6tZFl5juZhvQ5s7NPcaTlZyeWL92Pbrdljc0PdzQZtLLciR5nvfiYHHpolE3zeXNzOp85tp77wM2U57VTWHKTEcNCATMknnmfh-b9ThyZwKCXTyF-5SJbp_1eWmOJTroATBi0tokwV5pP2kNHPFV5aFunpjBhMVMUupsLZL7COULj2uKolfw54w";
if ($key = getKeysearch($url))
{
echo $key;
}

Answer 3

补充一下，用file_get_contents很有可能出错，建议用curl获取页面内容。