Question

我正在尝试为preg匹配构建这些正则表达式语句，但我遇到了很多麻烦。有人可以找出任何错误并提供正确的preg_match代码。

组名称必须介于2到20个字符之间，并且包含大写和小写字母

群组大小必须是2到6之间的数字

邮政编码需要是有效的英国邮政编码（政府提供的声明，但不确定是否正确实施）

预算必须是1到10000之间的数字

    if (!preg_match('/^[a-zA-Z \']+$/', $group_name)) {
        unsuccessful("Please ensure that group name contains only letters, apostrophes
                      and spaces and is between 2 and 20 characters long",
                     $group_name, $group_size, $postcode); 
    } else if (!preg_match('/^([2-6])$/', $group_size)) {
        unsuccessful("Please ensure that group size is between 2 and 6 people",
                     $group_name, $group_size, $postcode);
    } else if (!(preg_match("/^[A-Z]{1,2}[0-9]{2,3}[A-Z]{2}$/",$postcode)
                 || preg_match("/^[A-Z]{1,2}[0-9]{1}[A-Z]{1}[0-9]{1}[A-Z]{2}$/",$postcode)
                 || preg_match("/^GIR0[A-Z]{2}$/",$postcode))) {
        unsuccessful("Please ensure that the postcode is correct",
                     $group_name, $group_size, $postcode);
    } else if (!preg_match('/^([1-9][0-9][0-9]{0,2}|10000)$/', $budget)) {
        unsuccessful("Please ensure budget is between 1 and 10000 and contains only numbers",
                     $group_name, $group_size, $postcode);      if (!preg_match('/^[a-zA-Z \']+$/', $group_name)) {
        unsuccessful("Please ensure that group name contains only letters
                      and spaces and is between 2 and 20 characters long",
                     $group_name, $group_size, $postcode); 
    } else if (!preg_match('/^([2-6])$/', $group_size)) {
        unsuccessful("Please ensure that group size is between 2 and 6 people",
                     $group_name, $group_size, $postcode);
    } else if (!(preg_match("/^[A-Z]{1,2}[0-9]{2,3}[A-Z]{2}$/",$postcode)
                 || preg_match("/^[A-Z]{1,2}[0-9]{1}[A-Z]{1}[0-9]{1}[A-Z]{2}$/",$postcode)
                 || preg_match("/^GIR0[A-Z]{2}$/",$postcode))) {
        unsuccessful("Please ensure that the postcode is correct",
                     $group_name, $group_size, $postcode);
    } else if (!preg_match('/^([1-9][0-9][0-9]{0,2}|10000)$/', $budget)) {
        unsuccessful("Please ensure budget is between 1 and 10000 and contains only numbers",
                     $group_name, $group_size, $postcode);

非常感谢

卡比尔

Answer 1

群组名称必须介于2到20个字符之间，并且包含大写和小写字母

创建前一个令牌2到20之间的范围匹配。

/^[a-zA-Z \']{2,20}$/

群组大小必须是2到6之间的数字

这个很好

/^([2-6])$/

邮政编码需要是有效的英国邮政编码

根据regexlib，这将匹配英国邮政编码

/^([A-PR-UWYZ0-9][A-HK-Y0-9][AEHMNPRTVXY0-9]?[ABEHMNPRVWXY0-9]? {1,2}[0-9][ABD-HJLN-UW-Z]{2}|GIR 0AA)$/

预算必须是1到10000之间的数字

解释here
经过测试here

/^([1-9]|[1-9][0-9][0-9]{0,2}|10000)$/

这些preg_match语句是否正确？

1 个答案: