时间:2021-07-01 10:21:17 帮助过:74人阅读
php代码:
$str = '13141078884 13161143334 13263362224 18511925554 18612623450 13141102288 13161146662 13263370884 18513608884 18612625555 13141108580 13161146667 13263389994 13264459992 18600004038 18612932226';
// 匹配手机号后四位至少有一个是8
preg_match_all('/????????/', $str, $res);
var_dump($res);
我有一串手机号:'13141078884 13161143334 13263362224 18511925554 18612623450 13141102288 13161146662 13263370884 18513608884 18612625555 13141108580 13161146667 13263389994 13264459992 18600004038 18612932226',相匹配出后四位至少有一个是8的手机号,正则该怎么写?
不要穷举。如(8\d{3}|\d8\d\d|\d\d8\d|\d{3}8\d)。
零宽断言能写吗
php代码:
$str = '13141078884 13161143334 13263362224 18511925554 18612623450 13141102288 13161146662 13263370884 18513608884 18612625555 13141108580 13161146667 13263389994 13264459992 18600004038 18612932226';
// 匹配手机号后四位至少有一个是8
preg_match_all('/????????/', $str, $res);
var_dump($res);
(?=(.?){3}8)(\d{4})
(?=\d*8)(\d{4})
(?![^8]{4})(\d{4}) // 受@chouchang折叠答案的启发
PHP测试可以匹配
$str = '13141078884 13161143334 13263362224 18511925554 18612623450 13141102288 13161146662 13263370884 18513608884 18612625555 13141108580 13161146667 13263389994 13264459992 18600004038 18612932226';
// 匹配手机号后四位至少有一个是8
preg_match_all('/\d{7}(?=(.?){3}8)(\d{4})/', $str, $res);
var_dump($res);
/8(?:\d{0,3})$/
保证11位数字:
/^(?=\d{11})(?=\d*8\d{0,3}).*$/
//还是没有办法,期待其他人能想出来
是我想多了,应该这么写:
/^(?=\d*8\d{0,3})\d{11}$/
/[^8]{4}$/