使用 php/regex 验证美国电话号码 [英] Validating US phone number with php/regex
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问题描述
我混合并修改了下面给出的两个答案以形成完整的功能，现在可以完成我想要的功能，然后是一些......所以我想我'd 在这里发布，以防其他人来寻找同样的东西.
/*
* Function to analyze string against many popular formatting styles of phone numbers
* Also breaks phone number into it's respective components
* 3-digit area code, 3-digit exchange code, 4-digit subscriber number
* After which it validates the 10 digit US number against NANPA guidelines
*/
function validPhone($phone) {
$format_pattern = '/^(?:(?:((?=d{3})))?(d{3})(?:(?<=(d{3})))?[s./-]?)?(d{3})[s./-]?(d{4})s?(?:(?:(?:(?:e|x|ex|ext).?:?|extension:?)s?)(?=d+)(d+))?$/';
$nanpa_pattern = '/^(?:1)?(?(?!(37|96))[2-9][0-8][0-9](?<!(11)))?[2-9][0-9]{2}(?<!(11))[0-9]{4}(?<!(555(01([0-9][0-9])|1212)))$/';
//Set array of variables to false initially
$valid = array(
'format' => false,
'nanpa' => false,
'ext' => false,
'all' => false
);
//Check data against the format analyzer
if(preg_match($format_pattern, $phone, $matchset)) {
$valid['format'] = true;
}
//If formatted properly, continue
if($valid['format']) {
//Set array of new components
$components = array(
'ac' => $matchset[1], //area code
'xc' => $matchset[2], //exchange code
'sn' => $matchset[3], //subscriber number
'xn' => $matchset[4], //extension number
);
//Set array of number variants
$numbers = array(
'original' => $matchset[0],
'stripped' => substr(preg_replace('[D]', '', $matchset[0]), 0, 10)
);
//Now let's check the first ten digits against NANPA standards
if(preg_match($nanpa_pattern, $numbers['stripped'])) {
$valid['nanpa'] = true;
}
//If the NANPA guidelines have been met, continue
if($valid['nanpa']) {
if(!empty($components['xn'])) {
if(preg_match('/^[d]{1,6}$/', $components['xn'])) {
$valid['ext'] = true;
}
}
else {
$valid['ext'] = true;
}
}
//If the extension number is valid or non-existent, continue
if($valid['ext']) {
$valid['all'] = true;
}
}
return $valid['all'];
}
推荐答案
您可以使用 前瞻断言.基本上我们所说的是我想要一系列特定的字母，(e，ex，ext，x，extension)后跟一个或多个数字.但我们也想涵盖根本没有扩展的情况.
You can resolve this using a lookahead assertion. Basically what we're saying is I want a series of specific letters, (e, ex, ext, x, extension) followed by one or more number. But we also want to cover the case where there's no extension at all.
旁注，你不需要括号围绕单个字符，如 [s] 或接下来的那个 [x].此外，您还可以分组意在相同的字符点，所以代替 s?.?/?，你可以使用 [s./]?这意味着其中任何一个字符"
Side Note, you don't need brackets around single characters like [s] or that [x] that follows. Also, you can group characters that are meant to be in the same spot, so instead of s?.?/?, you can use [s./]? which means "one of any of those characters"
这是正则表达式的更新，也解决了您在此处的评论.我已经在实际代码中添加了说明.
Here's an update with regex that resolves your comment here as well. I've added the explanation in the actual code.
<?php
$sPattern = "/^
(?: # Area Code
(?:
( # Open Parentheses
(?=d{3})) # Lookahead. Only if we have 3 digits and a closing parentheses
)?
(d{3}) # 3 Digit area code
(?:
(?<=(d{3}) # Closing Parentheses. Lookbehind.
) # Only if we have an open parentheses and 3 digits
)?
[s./-]? # Optional Space Delimeter
)?
(d{3}) # 3 Digits
[s./-]? # Optional Space Delimeter
(d{4})s? # 4 Digits and an Optional following Space
(?: # Extension
(?: # Lets look for some variation of 'extension'
(?:
(?:e|x|ex|ext).? # First, abbreviations, with an optional following period
|
extension # Now just the whole word
)
s? # Optionsal Following Space
)
(?=d+) # This is the Lookahead. Only accept that previous section IF it's followed by some digits.
(d+) # Now grab the actual digits (the lookahead doesn't grab them)
)? # The Extension is Optional
$/x"; // /x modifier allows the expanded and commented regex
$aNumbers = array(
'123-456-7890x123',
'123.456.7890x123',
'123 456 7890 x123',
'(123) 456-7890 x123',
'123.456.7890x.123',
'123.456.7890 ext. 123',
'123.456.7890 extension 123456',
'123 456 7890',
'123-456-7890ex123',
'123.456.7890 ex123',
'123 456 7890 ext123',
'456-7890',
'456 7890',
'456 7890 x123',
'1234567890',
'() 456 7890'
);
foreach($aNumbers as $sNumber) {
if (preg_match($sPattern, $sNumber, $aMatches)) {
echo 'Matched ' . $sNumber . "
";
print_r($aMatches);
} else {
echo 'Failed ' . $sNumber . "
";
}
}
?>
和输出:
Matched 123-456-7890x123
Array
(
[0] => 123-456-7890x123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123.456.7890x123
Array
(
[0] => 123.456.7890x123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123 456 7890 x123
Array
(
[0] => 123 456 7890 x123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched (123) 456-7890 x123
Array
(
[0] => (123) 456-7890 x123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123.456.7890x.123
Array
(
[0] => 123.456.7890x.123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123.456.7890 ext. 123
Array
(
[0] => 123.456.7890 ext. 123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123.456.7890 extension 123456
Array
(
[0] => 123.456.7890 extension 123456
[1] => 123
[2] => 456
[3] => 7890
[4] => 123456
)
Matched 123 456 7890
Array
(
[0] => 123 456 7890
[1] => 123
[2] => 456
[3] => 7890
)
Matched 123-456-7890ex123
Array
(
[0] => 123-456-7890ex123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123.456.7890 ex123
Array
(
[0] => 123.456.7890 ex123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 123 456 7890 ext123
Array
(
[0] => 123 456 7890 ext123
[1] => 123
[2] => 456
[3] => 7890
[4] => 123
)
Matched 456-7890
Array
(
[0] => 456-7890
[1] =>
[2] => 456
[3] => 7890
)
Matched 456 7890
Array
(
[0] => 456 7890
[1] =>
[2] => 456
[3] => 7890
)
Matched 456 7890 x123
Array
(
[0] => 456 7890 x123
[1] =>
[2] => 456
[3] => 7890
[4] => 123
)
Matched 1234567890
Array
(
[0] => 1234567890
[1] => 123
[2] => 456
[3] => 7890
)
Failed () 456 7890
这篇关于使用 php/regex 验证美国电话号码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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