Php URL, email, and mobile phone number Regular Expression Code-PHP source code

This article introduces in detail several regular expressions that are commonly used in php development, this article describes in detail the regular expressions commonly used in php development, such as the regular expression codes for websites, emails, and mobile phone numbers.

Script ec (2); script

1. Email judgment:

A domain name is composed of a specific character set, English letters, numbers, and "-" (that is, a hyphen or minus sign) of Chinese Characters in different countries, but cannot start or end with "-". "-" cannot appear consecutively. The domain name is case-insensitive. The domain name can contain up to 60 bytes (including the suffix. com,. net, and. org ).
/^ [A-z] ([a-z0-9] * [-_]? [A-z0-9] +) * @ ([a-z0-9] * [-_]? [A-z0-9] +) + [.] [a-z] {2, 3} ([.] [a-z] {2 })? $/I;
/Content/I forms a case-insensitive regular expression;

The basic rules are as follows:

The Code is as follows:
Preg_match ('/^ [a-z0-9 _-] + (. [_ a-z0-9-] +) * @ ([_ a-z0-9-] + .) + ([a-z] {2} | Aero | arpa | biz | com | coop | edu | gov | info | int | jobs | mil | museum | name | nato | net | org | pro | travel) $/', $ email)

Example 1

The Code is as follows:
Function is_email ($ email ){ Return strlen ($ email)> 6 & preg_match ("/^ [w-.] + @ [w-] + (. w +) + $/", $ email ); } ?>

Example 2

The Code is as follows:

$ Email_pattern = '/w {6, 16} @ w {1,}. w {2, 3}/I '; $ Email_valid = 'test _ 123@126.net '; $ Email_invalid = 'test @ test %@ 111 @ com '; $ Matches = array (); Preg_match ($ email_pattern, $ email_valid, $ matches []); Preg_match ($ email_pattern, $ email_invalid, $ matches []); Var_dump ($ matches ); ?> Result Array (2) {[0] => array (1) {[0] => string (16) "test_123@126.net"} [1] => array (0 ){}}

2. Determine the Url:

Example 1

The Code is as follows:
Function is_url ($ str ){ Return preg_match ('/^ http: // [A-Za-z0-9] +. [A-Za-z0-9] + [/=? % -&_~ '@ []': +!] * ([^ <> "]) * $/", $ Str ); }

Example 2

Php judges the url address and automatically converts it to a hyperlink. In a string, match the url with a regular expression. After converting the url to a hyperlink, click the accessible url.

The Code is as follows:
Function autolink ($ foo) { $ Foo = eregi_replace ('(f | ht) {1} tp: //) [-a-zA-Z0-9 @: % _/+ .~ #? & // =] +) ','/1', $ foo ); If (strpos ($ foo, "http") = FALSE ){ $ Foo = eregi_replace ('(www. [-a-zA-Z0-9 @: % _/+ .~ #? & // =] +) ','/1', $ foo ); } Else { $ Foo = eregi_replace ('([[: space:] () [{}]) (www. [-a-zA-Z0-9 @: % _/+ .~ #? & // =] +) ','/123', $ foo ); } Return $ foo; } ?>

3. Determine the mobile phone number:

Example 1

The Code is as follows:
Function is_mobile ($ str ){ Return preg_match ("/^ (d {3}) | (d {3 }-))? 13d {9 }$/", $ str ); } Example 2 If (preg_match ("/^ 13 [0-9] {1} [0-9] {8} $ | 15 [0189] {1} [0-9] {8} $ | 189 [0-9] {8} $ /", $ mobilephone )){ // Verification passed } Else { // Incorrect Mobile Phone Number Format }