Question

凡是新到PHP的,请说明以下预兆。

preg_match("/^(9)1+$/",$value);

Answer 1

该编码将与2个或2个以上<代码>9相符。

监管局是 we的,并非海事组织意图的典型。页: 1

/^9{2,}z/

Answer 2

预支款($arg1,$arg2);

$arg1 - regular expression $arg1 is being searched/matchedin $arg2

http://php.net/manual/en/Function.preg-match.php rel=“nofollow”http://php.net/manual/en/Function.preg-match.php。

http://www.ual-expressions.info/examples.html” rel=“nofollow” http://www.mal-expressions.info/examples.html

In the example you gave: The regular expression "/^(9)1+$/" - Starts(^) with 9 and have more than 1 (1+ which means 2 or more) 9 s and ends($) with 9

因此,正在以美元价值搜索。希望是明确的。