[英]PHP preg_match_all returns empty arrays
I have this preg_match_all
: 我有这个
preg_match_all
:
$cash = "hi £240";
preg_match_all("/^£?(([1-9]{1,3}(,\d{3})*(\.\d{2})?)|(0\.[1-9]\d)|(0\.0[1-9]))$/", $cash, $matches);
print_r($matches);
And the print_r returns: 并且print_r返回:
Array ( [0] => Array ( ) [1] => Array ( ) [2] => Array ( ) [3] => Array ( ) [4] => Array ( ) [5] => Array ( ) [6] => Array ( ) ) Array([0] => Array()[1] => Array()[2] => Array()[3] => Array()[4] => Array()[5] => Array() [6] =>数组()
When I tried just preg_match, it didnt work at all, did I miss something? 当我尝试preg_match时,它根本不起作用,我错过了什么吗?
I am searching the string for GB monetary values. 我正在搜索字符串以获取GB货币值。
$cash = "hi £240";
preg_match_all("/£(?P<amount>\d*,?\d*\.?\d*)/",$cash,$match);
print_r($match['amount']);
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