能有人告诉我,为什么的preg_match和麻烦的正则表达式
//string
$content = 'random ${one.var} ${two.var} random';
//match
preg_match('/(?:(?<=\$\{))([\w.]+){1}(?=\})/i', $content, $matches);
正在恢复
print_R($matches);
//output
array(
[0]=>one.var
[1]=>one.var
);
我想是
array(
[0]=>one.var
[1]=>two.var
);
谢谢。但我不需要'$ {'和'}'位。观察周围的原因。从来不知道我需要preg_match_all来代替/ g修饰符。谢谢。现在用'(?:(?<= \ $ \ {))(。*?)(?= \})返回'array(数组( [0] => one.var [1] = > two.var ),阵列( [0] => one.var [1] => two.var ))' – stone 2012-02-22 20:54:32