只取括号内的数字(brackets)
Only take numbers inside parentheses (brackets)
使用下面的代码,
$string = 'd.c part2 15245 (30)';
$string2 = preg_replace('/[^0-9]/', '', $string);
echo $string2;
输出:21524530
如何只取括号内的数字
所以输出是30
?
使用preg_match
:
$string = 'd.c part2 15245 (30)';
preg_match('/\((\d+)\)/', $string, $match);
print_r($match);
输出:
Array
(
[0] => (30)
[1] => 30
)
$re = '/\((\d+)\)/ix';
$str = 'd.c part2 15245 (30)';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
使用下面的代码,
$string = 'd.c part2 15245 (30)';
$string2 = preg_replace('/[^0-9]/', '', $string);
echo $string2;
输出:21524530
如何只取括号内的数字
所以输出是30
?
使用preg_match
:
$string = 'd.c part2 15245 (30)';
preg_match('/\((\d+)\)/', $string, $match);
print_r($match);
输出:
Array
(
[0] => (30)
[1] => 30
)
$re = '/\((\d+)\)/ix';
$str = 'd.c part2 15245 (30)';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);