我有这些数组(数组和数组2)
$urls = array("http://piggington.com/pb_cash_flow_positive")
我有这个正则表达式
(preg_match("/\/{2}.*?\./", $array[$i], $matches))
它检查第二次斜线之后和第一次点之前的所有内容。所以它会找到
/piggington.
现在想要在下面的正则表达式中连接变量,因此它将搜索特定的字符串。
我试过了:
$matches_imploded = implode($matches);
$matches_imploded = preg_quote($matches_imploded, '/');
$match_with_other_array = preg_grep("/\/{2}".$matches_imploded."\./", $array2);
但它没有找到任何匹配。我做错了什么?它应该在array2中查找并与$ matches_imploded
进行正匹配between second slash and first dot we found $matches_imploded
答案 0 :(得分:2)
要匹配//
之后和第一个点之前的所有内容,您需要使用\K
或正面的背后。
preg_match("~/{2}\K[^.]*(?=.)~", $array[$i], $matches)
$matches_imploded = implode($matches);
$matches_imploded = preg_quote($matches_imploded, '/');
$match_with_other_array = preg_grep("/\/{2}".$matches_imploded."\./", $array2);