Example of php regular expression matching a tag

Method 1

The code is as follows:	Copy code
$ A = '<a href = "www.111cn.net"> Baidu </a> gu ge <a href = "www.111cn.net"> Google </a> <a href = "www.111cn.net"> Yahoo </a> '; Preg_match_all ('/<a [^>] +> [^>] + a>/', $ a, $ aout ); Print_r ($ aout ); Result Array ( [0] => Array         ( [0] => <a href = "www.111cn.net"> Baidu </a> [1] => <a href = "www.111cn.net"> Google </a> [2] => <a href = "www.111cn.net"> Yahoo </a>         )   )

Method 2

Example:

The code is as follows:

Copy code

$ Str1 = '<a href = http://www.111cn.net> test </a> '; $ Str2 = '<a href = 'http: // www.111cn.net'> test </a> '; $ Str3 = '<a href = "export cnames: href ('test');" target = "_ blank"/> test </a> '; $ Regex = '/hrefs * = s *(? : "([^"] *) "| '([^'] *) '| ([^"'> S] + ))/'; Preg_match ($ regex, $ str1, $ matches ); Print_r ($ matches ); Preg_match ($ regex, $ str2, $ matches ); Print_r ($ matches ); Preg_match ($ regex, $ str3, $ matches ); Print_r ($ matches );   Matching result: Array ( [0] => href = http://www.111cn.net [1] => [2] => Http://www.111cn.net ) Array ( [0] => href = 'http: // www.111cn.net' [1] => Http://www.111cn.net ) Array ( [0] => href = "export cnames: href ('test ');" [1] => export cnames: href ('test '); )

/Href \ s * = \ s *(? : "([^"] *) "| \ '([^ \'] *) \ '| ([^" \'> \ S] + ))/
The idea is clever:
In two steps, configure the tag first, and then configure the link in the tag.